332354 + Interview Questions in Secondary School in Math

1.	UIA bag contains 12 balls out of which x are black balls. Find the probability of getting ablack ball if one ball is drawn. If 6 more blacks balls are added in the bag. the probability of getting a black ball will be double. Find x
Answer» Step-by-step explanation: UI A bag contains 12 BALLS out of which x are BLACK balls. Find the probability of getting a black ball if ONE ball is drawn. If 6 more blacks balls are added in the bag. the probability of getting a black ball will be DOUBLE. Find x

1.

UIA bag contains 12 balls out of which x are black balls. Find the probability of getting ablack ball if one ball is drawn. If 6 more blacks balls are added in the bag. the probability of getting a black ball will be double. Find x

Answer»

Step-by-step explanation:

UI

A bag contains 12 BALLS out of which x are BLACK balls. Find the probability of getting a

black ball if ONE ball is drawn. If 6 more blacks balls are added in the bag. the probability

of getting a black ball will be DOUBLE. Find x

Discussion

2.	Find value20% of80
Answer» Step-by-step explanation: 80 × 20÷100 = 16 plzz MARK as BRAINLIEST

2.

Find value20% of80

Answer»

Step-by-step explanation:

80 × 20÷100

= 16

plzz MARK as BRAINLIEST

Discussion

3.	-57y =1234-5y+76890=777880
Answer» ANSWER: -21.6491228 -140,198

3.

-57y =1234-5y+76890=777880

Answer»

ANSWER:

-21.6491228

-140,198

Discussion

4.	PLZ HELP!!!Two trains leave the station at the same time, one heading west and the other east. The westbound train travels 18 miles per hour slower than the eastbound train. If the two trains are 570 miles apart after 3 hours, what is the rate of the westbound train?
Answer» sorry MATE i DONT understand UR question

4.

PLZ HELP!!!Two trains leave the station at the same time, one heading west and the other east. The westbound train travels 18 miles per hour slower than the eastbound train. If the two trains are 570 miles apart after 3 hours, what is the rate of the westbound train?

Answer»

sorry MATE i DONT understand UR question

Discussion

5.	6826 ka square root
Answer» $\huge\underline\mathrm{Heya!}$ $\sqrt{6826} = 82.62 \: (approx)$

5.

6826 ka square root

Answer»

$\huge\underline\mathrm{Heya!}$

$\sqrt{6826} = 82.62 \: (approx)$

Discussion

6.	What will come in the place of the question mark(?) in the following number series? 5,4,7,20,79,?
Answer» Answer:See friend the SERIES is like 5×1–1=4 4×2–1=7 7×3–1=20 20×4–1=79 So the Q. Mark TERM will be, 79×5–1=394 I hope it HELPS you.☺ Step-by-step explanation:

6.

What will come in the place of the question mark(?) in the following number series? 5,4,7,20,79,?

Answer»

Answer:See friend the SERIES is like

5×1–1=4

4×2–1=7

7×3–1=20

20×4–1=79

So the Q. Mark TERM will be,

79×5–1=394

I hope it HELPS you.☺

Step-by-step explanation:

Discussion

7.	Is60 - 70 70 - 80 80 - 90Frequency25, 20me work Ganesh takes 10 days more than Gajanan. If both wodoing some work Gan810logether, theybey complete the work in 12 days. Find the number of days taken bycomplete the work, if he works alone.Ganesh to complasimultanen
Answer» Step-by-step EXPLANATION: HOPE it HELPS U!!!!!,,,,

7.

Is60 - 70 70 - 80 80 - 90Frequency25, 20me work Ganesh takes 10 days more than Gajanan. If both wodoing some work Gan810logether, theybey complete the work in 12 days. Find the number of days taken bycomplete the work, if he works alone.Ganesh to complasimultanen

Answer»

Step-by-step EXPLANATION:

HOPE it HELPS U!!!!!,,,,

Discussion

8.	6826 ka square root6826 ka square root
Answer» Step-by-step EXPLANATION: $\sqrt{6826 = 82.61}$ HOPE it HELP U

8.

6826 ka square root6826 ka square root

Answer»

Step-by-step EXPLANATION:

$\sqrt{6826 = 82.61}$

HOPE it HELP U

Discussion

9.	What come adjectly between 0 and 4
Answer» ANSWER: INFINITE REAL no.s☺ Step-by-step EXPLANATION:

9.

What come adjectly between 0 and 4

Answer»

ANSWER:

INFINITE REAL no.s☺

Step-by-step EXPLANATION:

Discussion

10.	find the perimeter and area of the following rectangle length is equal to 20 M breadth is equal to 15
Answer» Step-by-step EXPLANATION: perimeter=2(20+15)=70 & area=20×15=300

10.

find the perimeter and area of the following rectangle length is equal to 20 M breadth is equal to 15

Answer»

Step-by-step EXPLANATION:

perimeter=2(20+15)=70

&

area=20×15=300

Discussion

11.	Concentration of oresGravitation based separationLeaching
Answer» Step-by-step EXPLANATION: CONCENTRATION of ores Gravitation BASED separation Leaching

11.

Concentration of oresGravitation based separationLeaching

Answer»

Step-by-step EXPLANATION:

CONCENTRATION of ores

Gravitation BASED separation

Leaching

Discussion

12.	Show that (4,5) (7,6) (4,8) (1,2) from the vertices of quadrilateral
Answer» Step-by-step explanation: Bro make these POINTS on QUADRANTS and you'll GET to know your ANSWER .

12.

Show that (4,5) (7,6) (4,8) (1,2) from the vertices of quadrilateral

Answer»

Step-by-step explanation:

Bro make these POINTS on QUADRANTS and you'll GET to know your ANSWER .

Discussion

13.	Length is equal to 20 metre
Answer» Answer: BREADTH is equal to 10 metre. HOPE it's help plzzzzzz mark it as BRAINLIEST

13.

Length is equal to 20 metre

Answer»

Answer:

BREADTH is equal to 10 metre.

HOPE it's help

plzzzzzz mark it as BRAINLIEST

Discussion

14.	Differentiate using first principles:
Answer» MAKE it BRAINLIEST ANSWER

14.

Differentiate using first principles:

Answer»

MAKE it BRAINLIEST ANSWER

Discussion

15.	Please help me to solve it somebody
Answer» Answer: HINT=DIVIDE THE VOL. OF THE WALL BY THE volm. Of BRICKS.[and KEEP in mind that the dimensions of walls are in metres and that of bricks are in CM.] I hope it HELPS you.☺ Step-by-step EXPLANATION:

15.

Please help me to solve it somebody

Answer»

Answer:

HINT=DIVIDE THE VOL. OF THE WALL BY THE volm. Of BRICKS.[and KEEP in mind that the dimensions of walls are in metres and that of bricks are in CM.]

I hope it HELPS you.☺

Step-by-step EXPLANATION:

Discussion

16.	1. If two sides of a triangle are of lengths 7 cm and 3 cm, then the third side must be(a) > 10 cm(b) < 10 cm(c) = 10 cm(d) S 10 cm1 (notoncle Requals
Answer» ANSWER: yes it was the first TIME I got the same answer for a while AGO but the best of my life and the other hand in a while and it was the one Step-by-step EXPLANATION: gotyohggfxxhnft

16.

1. If two sides of a triangle are of lengths 7 cm and 3 cm, then the third side must be(a) > 10 cm(b) < 10 cm(c) = 10 cm(d) S 10 cm1 (notoncle Requals

Answer»

ANSWER:

yes it was the first TIME I got the same answer

for a while AGO but the best of my life

and the other hand in a while

and it was the one

Step-by-step EXPLANATION:

gotyohggfxxhnft

Discussion

17.	How to prove the pythagoras theorem
Answer» Answer: Here your answer. Pythagorean THEOREM, the well-known geometric theorem that the sum of the SQUARES on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic NOTATION, A2 + b2 = c2 Step-by-step explanation: PLZ comments and follow

17.

How to prove the pythagoras theorem

Answer»

Answer:

Here your answer.

Pythagorean THEOREM, the well-known geometric theorem that the sum of the SQUARES on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic NOTATION, A2 + b2 = c2

Step-by-step explanation:

PLZ comments and follow

Discussion

18.	. An opening hand in the game Blackjack is made up of two cards with the following point values:• Aces are worth 11 points.• Jacks, Queens, and Kings are worth 10 points each.• All other cards are worth their number (ie a 4 is worth 4 points, a 7 is worth 7 points, etc.)Greatly oversimplifying things, the goal of the game is to get exactly 21 points. In the questionsbelow, assume that an opening hand is drawn from a freshly shuffled deck, and that cards are putback and then reshuffled in between trials. (Note: this is not how blackjack actually works.) Forthis question, show all of your work.(A) What is the expected value of an opening hand of blackjack?(B) What is the variance of an opening hand of blackjack?(C) What is the probability of getting exactly 21 in an opening hand?(D) If you know that the first card you draw is an ace, what is the probability of getting exactly21 in an opening hand?
Answer» Probability of getting exactly 21 in an opening hand = 0.048 Step-by-step explanation: Ace = 11 JACK , Queen , KINGS , & card 10 = 10 To get 21 we need to get Ace + either of Jack , Queen , kings , & card 10 Ace = 4 either of Jack , Queen , kings , & card 10 = 4 * 4 = 16 probability of getting exactly 21 in an opening hand = (4/52)(16/51) + (16/52)(4/51) = 2 * 64 / (52 * 51) = 64/ (26 * 51) = 32/(13 * 51) = 32/663 = 0.048 if first card you drawn is an ace then probability of getting exactly 21 in an opening hand = 16/51 = 0.314 Learn more: Find the probability distribution of the numbers obtained in THROWING ... brainly.in/question/13162018 A SAMPLE of four chocolate bars are randomly selected from a box of ... brainly.in/question/14587481 The probability distribution of a discrete r.v. X is GIVEN in table (i ... brainly.in/question/6536710

18.

. An opening hand in the game Blackjack is made up of two cards with the following point values:• Aces are worth 11 points.• Jacks, Queens, and Kings are worth 10 points each.• All other cards are worth their number (ie a 4 is worth 4 points, a 7 is worth 7 points, etc.)Greatly oversimplifying things, the goal of the game is to get exactly 21 points. In the questionsbelow, assume that an opening hand is drawn from a freshly shuffled deck, and that cards are putback and then reshuffled in between trials. (Note: this is not how blackjack actually works.) Forthis question, show all of your work.(A) What is the expected value of an opening hand of blackjack?(B) What is the variance of an opening hand of blackjack?(C) What is the probability of getting exactly 21 in an opening hand?(D) If you know that the first card you draw is an ace, what is the probability of getting exactly21 in an opening hand?

Answer»

Probability of getting exactly 21 in an opening hand = 0.048

Step-by-step explanation:

Ace = 11

JACK , Queen , KINGS , & card 10 = 10

To get 21 we need to get

Ace + either of Jack , Queen , kings , & card 10

Ace = 4

either of Jack , Queen , kings , & card 10 = 4 * 4 = 16

probability of getting exactly 21 in an opening hand

= (4/52)(16/51) + (16/52)(4/51)

= 2 * 64 / (52 * 51)

= 64/ (26 * 51)

= 32/(13 * 51)

= 32/663

= 0.048

if first card you drawn is an ace

then probability of getting exactly 21 in an opening hand = 16/51

= 0.314

Learn more:

Find the probability distribution of the numbers obtained in THROWING ...

brainly.in/question/13162018

A SAMPLE of four chocolate bars are randomly selected from a box of ...

brainly.in/question/14587481

The probability distribution of a discrete r.v. X is GIVEN in table (i ...

brainly.in/question/6536710

Discussion

19.	If N={all positive integers less than or equal to 50}A={all even numbers less than or equal to 50} B={all odd positive number less than or equal 39}C={all integers X:101 List out all the numbers of N 2List out all the numbers of A3 List out all the numbers of B4 List out all the numbers of C
Answer» If N={all positive integers less than or equal to 50} N = { 1,2,3,4,...,49,50} A={all even numbers less than or equal to 50} A = { 2,4,6,8,....,48,50} B={all ODD positive number less than or equal 39} B = {1,3,5,....,37,39 } •••♪

19.

If N={all positive integers less than or equal to 50}A={all even numbers less than or equal to 50} B={all odd positive number less than or equal 39}C={all integers X:101 List out all the numbers of N 2List out all the numbers of A3 List out all the numbers of B4 List out all the numbers of C

Answer»

If N={all positive integers less than or equal to 50}

N = { 1,2,3,4,...,49,50}

A={all even numbers less than or equal to 50}

A = { 2,4,6,8,....,48,50}

B={all ODD positive number less than or equal 39}

B = {1,3,5,....,37,39 }

•••♪

Discussion

20.	प्रश्नःसमान उंचीच्या दोन मेणबत्त्या एकाच वेळी प्रज्वलीत केल्या. पहिली मेणबत्ती 4 तासात तर दुसरी मेणबत्ती 3 तासात पूर्णपणे जळून जातात. समजा दोन्ही मेणबत्त्या स्थिर गतीने जळत असतील, तर दोन्ही मेणबत्त्या एकाच वेळी प्रज्वलीत केल्यानंतर किती वेळाने पहिली मेणबत्तीची उंची दुसऱ्या मेणबत्तीच्या उंचीच्या दुप्पट राहिल?
Answer» 2.4 hrs Step-by-step explanation: समजा दोन मेणबत्त्या वेळी = 12L पहिली मेणबत्ती 4 तासात तर जळून जातात जळून जातात दर = 3L / hr दुसरी मेणबत्ती 3 तासात तर जळून जातात जळून जातात दर = 4L / hr समजा X तासांनंतर मेणबत्ती 1 उंची मेणबत्ती 2 च्या दुप्पट असेल => (12L - X3L) = 2 ( 12L - X 4L) => 12 - 3X = 24 - 8X => 5X = 12 => X = 12/5 => X = 2.4 hrs Learn more: there are 2 candles of same length and same size. both of them burn ... brainly.in/question/3692849 Two candles of equal length STARTS burning at the same instant. One ... brainly.in/question/4118653

20.

प्रश्नःसमान उंचीच्या दोन मेणबत्त्या एकाच वेळी प्रज्वलीत केल्या. पहिली मेणबत्ती 4 तासात तर दुसरी मेणबत्ती 3 तासात पूर्णपणे जळून जातात. समजा दोन्ही मेणबत्त्या स्थिर गतीने जळत असतील, तर दोन्ही मेणबत्त्या एकाच वेळी प्रज्वलीत केल्यानंतर किती वेळाने पहिली मेणबत्तीची उंची दुसऱ्या मेणबत्तीच्या उंचीच्या दुप्पट राहिल?

Answer»

2.4 hrs

Step-by-step explanation:

समजा दोन मेणबत्त्या वेळी = 12L

पहिली मेणबत्ती 4 तासात तर जळून जातात

जळून जातात दर = 3L / hr

दुसरी मेणबत्ती 3 तासात तर जळून जातात

जळून जातात दर = 4L / hr

समजा X तासांनंतर मेणबत्ती 1 उंची मेणबत्ती 2 च्या दुप्पट असेल

=> (12L - X*3L) = 2 ( 12L - X * 4L)

=> 12 - 3X = 24 - 8X

=> 5X = 12

=> X = 12/5

=> X = 2.4 hrs

Learn more:

there are 2 candles of same length and same size. both of them burn ...

brainly.in/question/3692849

Two candles of equal length STARTS burning at the same instant. One ...

brainly.in/question/4118653

Discussion

21.	Solve the following equation by factorisation:
Answer» Answer:SQUARE on both the SIDES and then solve it to get the SIMPLEST FORM of the eqn. And then factorise.☺ Step-by-step EXPLANATION:

21.

Solve the following equation by factorisation:

Answer»

Answer:SQUARE on both the SIDES and then solve it to get the SIMPLEST FORM of the eqn. And then factorise.☺

Step-by-step EXPLANATION:

Discussion

22.	5 times 5th term of an A.P = 8 times 8th term , then show that 13th term is 0
Answer» Answer: Ans is in attachment Step-by-step EXPLANATION: Hope it helped and *HANDWRITING is* *understood. Mark the BRAINLIST ans* *with thanks. Follow me for* *more GREAT* *ans*....

22.

5 times 5th term of an A.P = 8 times 8th term , then show that 13th term is 0

Answer»

Answer:

Ans is in attachment

Step-by-step EXPLANATION:

Hope it helped and HANDWRITING is understood.

Mark the BRAINLIST ans with thanks.

Follow me for more GREAT ans....

Discussion

23.	I need some help with b)
Answer» Answer: 12 tests Step-by-step EXPLANATION: Four multiplied three dont CONVERT the answer please

23.

I need some help with b)

Answer»

Answer: 12 tests

Step-by-step EXPLANATION:

Four multiplied three dont CONVERT the answer please

Discussion

24.	The interior angles of a hexagon form an arithmetic sequence.The largest angle is 130°. Determine the sequence formed by angles of the hexagon.
Answer» ANSWER: 130° ........answer..... Step-by-step EXPLANATION: jajajsjdksn bdjeks

24.

The interior angles of a hexagon form an arithmetic sequence.The largest angle is 130°. Determine the sequence formed by angles of the hexagon.

Answer»

ANSWER:

130° ........answer.....

Step-by-step EXPLANATION:

jajajsjdksn bdjeks

Discussion

25.	5. If 5^n-2 x 3^2n–3 = 135, find the value of n.
Answer» $\blue{\underline {\underline {<klux>N</klux> \: = \: <klux>3</klux> }}}$ 135 = 5^1 * 3^3 Hence, n - 2 = 1 n = 3

25.

5. If 5^n-2 x 3^2n–3 = 135, find the value of n.

Answer»

$\blue{\underline {\underline {<klux>N</klux> \: = \: <klux>3</klux> }}}$

135 = 5^1 * 3^3

Hence, n - 2 = 1

n = 3

Discussion

26.	What are the numbers exactly between 0 and 4?
Answer» $\huge\underline\mathrm{Heya!}$ NUMBERS between 0 and 4 are 1, 2 and 3

26.

What are the numbers exactly between 0 and 4?

Answer»

$\huge\underline\mathrm{Heya!}$

NUMBERS between 0 and 4 are 1, 2 and 3

Discussion

27.	Work out the area of a rectangle with base, b = 16mm and perimeter, P = 48mm.
Answer» PERIMETER= 2(l+b) 48 2(16+.l) 48/2. =16+l 24. =16 +l 24-16= b 8=l Area= l.b =8.16 =128sq .mm Step-by-step explanation:

27.

Work out the area of a rectangle with base, b = 16mm and perimeter, P = 48mm.

Answer»

PERIMETER= 2(l+b)

48 2(16+.l)

48/2. =16+l

24. =16 +l

24-16= b

8=l

Area= l.b

=8.16

=128sq .mm

Step-by-step explanation:

Discussion

28.	If yesterday was Friday, then tomorrow will be which day(a) Sunday (b) Monday (c) Tuesday (d) Wednesday
Answer» $Given \: Yesterday \:was \: Friday$ $Now,\: Today \: is \: Saturday$ $Tomorrow \: will \: be \: \green { Sunday }$ THEREFORE., $Option \: \pink { (a) } \:is \: correct$ •••♪

28.

If yesterday was Friday, then tomorrow will be which day(a) Sunday (b) Monday (c) Tuesday (d) Wednesday

Answer»

$Given \: Yesterday \:was \: Friday$

$Now,\: Today \: is \: Saturday$

$Tomorrow \: will \: be \: \green { Sunday }$

THEREFORE.,

$Option \: \pink { (a) } \:is \: correct$

•••♪

Discussion

29.	What number comes between 0 and 4
Answer» Answer: 1,2,3 Step-by-step EXPLANATION:

29.

What number comes between 0 and 4

Answer»

Answer:

1,2,3

Step-by-step EXPLANATION:

Discussion

30.	(1/x+1) +(2/x+2)=(4/x+4) pls koi solve karo brainliest mark karungi
Answer» Answer: x=2+2\sqrt{3}\:Or \: x=2-2\sqrt{3} Step-by-step explanation: \FRAC{1}{x+1}+\frac{2}{x+2}=\frac{4}{x+4} \implies \frac{x+2+2(x+1)}{(x+1)(x+2)}=\frac{4}{x+4} \implies \frac{x+2+2x+2)}{(x^{2}+3x+2)}=\frac{4}{x+4} \implies \frac{3x+4}{x^{2}+3x+2}=\frac{4}{x+4} \implies (3x+4)(x+4)=4(x^{2}+3x+2) \implies 3x^{2}+12x+4x+16=4x^{2}+12x+8 \implies 3x^{2}+16x+16-4x^{2}-12x-8=0 \implies -x^{2}+4x+8=0 \implies x^{2}-4x-8=0 Compare \: this \: with \\AX^{2}+bx+c=0,we \:get a=1,b=-4,x=-8 Discreminant (D)=b²-4ac = (-4)²-4×1×(-8) = 16+32 = 48 x = \frac{-b±\sqrt{D}}{2A} =\frac{-(-4)±\sqrt{48}}{2}\\=\frac{4±4\sqrt{3}}{2}\\=2±2\sqrt{3} \implies x=2+2\sqrt{3}\:Or \: x=2-2\sqrt{3} Therefore, x=2+2\sqrt{3}\:Or \: x=2-2\sqrt{3}

30.

(1/x+1) +(2/x+2)=(4/x+4) pls koi solve karo brainliest mark karungi

Answer»

Answer:

x=2+2\sqrt{3}\:Or \: x=2-2\sqrt{3}

Step-by-step explanation:

\FRAC{1}{x+1}+\frac{2}{x+2}=\frac{4}{x+4}

\implies \frac{x+2+2(x+1)}{(x+1)(x+2)}=\frac{4}{x+4}

\implies \frac{x+2+2x+2)}{(x^{2}+3x+2)}=\frac{4}{x+4}

\implies \frac{3x+4}{x^{2}+3x+2}=\frac{4}{x+4}

\implies (3x+4)(x+4)=4(x^{2}+3x+2)

\implies 3x^{2}+12x+4x+16=4x^{2}+12x+8

\implies 3x^{2}+16x+16-4x^{2}-12x-8=0

\implies -x^{2}+4x+8=0

\implies x^{2}-4x-8=0

Compare \: this \: with \\AX^{2}+bx+c=0,we \:get

a=1,b=-4,x=-8

Discreminant (D)=b²-4ac

= (-4)²-4×1×(-8)

= 16+32

= 48

x = \frac{-b±\sqrt{D}}{2A}

=\frac{-(-4)±\sqrt{48}}{2}\\=\frac{4±4\sqrt{3}}{2}\\=2±2\sqrt{3}

\implies x=2+2\sqrt{3}\:Or \: x=2-2\sqrt{3}

Therefore,

x=2+2\sqrt{3}\:Or \: x=2-2\sqrt{3}

Discussion

31.	Answer 5 upon 6 + 14 upon 20
Answer» Answer: 5/6 + 14/20 Step-by-step explanation: step1- first you take LCM of 6 and 20. step2- then the LCM is 60 step3 -then LOOK in which no the 60 is coming in 6 table it come in 10 PLACE. then multiply 5 by 10 answer is 50 . step4 - then look in which no the 60 is coming in 20 table it comes in 3 place. then multiply 14 by 3 the answer is 42 . step4 - then the answer is 50/60 + 42/60 = 92/60 then the correct answer is 92/60

31.

Answer 5 upon 6 + 14 upon 20

Answer»

Answer:

5/6 + 14/20

Step-by-step explanation:

step1- first you take LCM of 6 and 20.

step2- then the LCM is 60

step3 -then LOOK in which no the 60 is coming in 6 table it come in 10 PLACE. then multiply 5 by 10 answer is 50 .

step4 - then look in which no the 60 is coming in 20 table it comes in 3 place. then multiply 14 by 3 the answer is 42 .

step4 - then the answer is 50/60 + 42/60 = 92/60 then the correct answer is 92/60

Discussion

32.	Find the perimeter and area of the following rectangle length is equal to 20 breadth is equal to 15
Answer» $\blue {\underline {\underline {Answer\: - \: 1. \: 70 \: m \: and \: 300 \: m^2 }}}$

Discussion

33.	Solve following simultaneous equation 1/x+1/y=12 ; 3/x-2/y=1
Answer» x=1/5 y=1/7 hope it HELPS U

33.

Solve following simultaneous equation 1/x+1/y=12 ; 3/x-2/y=1

Answer»

x=1/5

y=1/7

hope it HELPS U

Discussion

34.	If the equations x - 2y = 3 and 3x + ky = 1 have an unique solution, then(A) k=-6(B) k -6(C) k=0(D) k0
Answer» ANSWER: a) answer is -6 and it is UNIQUE SOLUTION

34.

If the equations x - 2y = 3 and 3x + ky = 1 have an unique solution, then(A) k=-6(B) k -6(C) k=0(D) k0

Answer»

ANSWER:

a) answer is -6 and it is UNIQUE SOLUTION

Discussion

35.	X/10^-2 - 3 ×10^10 t solve step by step
Answer» ANSWER: 300000000 Step-by-step EXPLANATION: => x * 1/10^-2 * 3 x 10^10 = 0 => x * 10^2/1 * 30000000000 = 0 => 100x * 30000000000 = 0 => x = 30000000000 / 100 => x = 30000000000 PLEASE MARK AS BRAINLIEST ANSWER :)

35.

X/10^-2 - 3 ×10^10 t solve step by step

Answer»

ANSWER:

300000000

Step-by-step EXPLANATION:

=> x * 1/10^-2 * 3 x 10^10 = 0

=> x * 10^2/1 * 30000000000 = 0

=> 100x * 30000000000 = 0

=> x = 30000000000 / 100

=> x = 30000000000

PLEASE MARK AS BRAINLIEST ANSWER :)

Discussion

36.	Please solve this ASAP.
Answer» Answer: The MINIMUM number of BISCUITS he has to buy is the LCM of the 3 numbers. LCM (10,12,18) = 180 So he has to buy 180 biscuits of each brand. So he has to buy 18 packets of A, 15 packets of B and 10 packets of C.

36.

Please solve this ASAP.

Answer»

Answer:

The MINIMUM number of BISCUITS he has to buy is the LCM of the 3 numbers.

LCM (10,12,18) = 180

So he has to buy 180 biscuits of each brand.

So he has to buy 18 packets of A, 15 packets of B and 10 packets of C.

Discussion

37.	Answer is -40 but how
Answer» $\blue{\underline {\underline {Answer \: - \: -40° }}}$ At this TEMPERATURE the VALUE on the CELCIUS SCALE is equal to the value on the Farenheit scale of temperature. Place C = F and you will get this value

37.

Answer is -40 but how

Answer»

$\blue{\underline {\underline {Answer \: - \: -40° }}}$

At this TEMPERATURE the VALUE on the CELCIUS SCALE is equal to the value on the Farenheit scale of temperature.

Place C = F and you will get this value

Discussion

38.	Pls answer the 4 question by taking help of the image given above
Answer» ANSWER: WALK and CYCLE..................

38.

Pls answer the 4 question by taking help of the image given above

Answer»

ANSWER:

WALK and CYCLE..................

Discussion

39.	23. The position of how many digits will remaunchanged if the digits in number 35647nemanged in ascending order from left to right(1)None (2) One (3) two(4)three
Answer» ANSWER: TWO DIGITS will be UNCHANGED

39.

23. The position of how many digits will remaunchanged if the digits in number 35647nemanged in ascending order from left to right(1)None (2) One (3) two(4)three

Answer»

ANSWER:

TWO DIGITS will be UNCHANGED

Discussion

40.	The diagonals of a rhombus measure 16 cm and 30 cm. Find its perimeter
Answer» Answer: Step-by-step explanation: Diagonals if a RHOMBUS BISECT each other at right angles so SIDE of rhombus should be 17 by pythogarous theorem .perimeter=4*17=68

40.

The diagonals of a rhombus measure 16 cm and 30 cm. Find its perimeter

Answer»

Answer:

Step-by-step explanation:

Diagonals if a RHOMBUS BISECT each other at right angles so SIDE of rhombus should be 17 by pythogarous theorem .perimeter=4*17=68

Discussion

41.	X+y=5;x-y=3 solve.
Answer» $\large{\underline{\underline{\mathfrak{\green{\sf{QUESTION:-}}}}}}$ . $\:(<klux>X</klux>+y)\:=\:5$ And, $\:(x-y)\:=\:3$ Solve this $\large{\underline{\underline{\mathfrak{\sf{SOLUTION:-}}}}}$ . $\large{\underline{\mathfrak{\sf{Given\:Equation:-}}}}$ . $\:(x+y)\:=\:5$ ...(1) $\:(x-y)\:=\:3$ .....(2) $\large{\underline{\underline{\mathfrak{\sf{Find\:Here:-}}}}}$ . VALUE of x and y $\large{\underline{\underline{\mathfrak{\sf{Explanation:-}}}}}$ . [ SUM of these equation ] $\implies\:(2y)\:=\:8$ $\implies\:y\:=\frac{8}{2}$ $\implies\boxed{\boxed{\:y\:=\:4}}$ Now, keep value of y in (1) $\implies\:(x+4)\:=\:5$ $\implies\:x\:=\:5-4$ $\implies\boxed{\boxed{\:x\:=\:1}}$ $\large{\underline{\underline{\mathfrak{\green{\sf{Answer:-}}}}}}$ . $\:Value\:of\:x\:=\:1$ $\:Value\:of\:y\:=\:4$ $\large{\underline{\underline{\mathfrak{\green{\sf{Answers:Verification:-}}}}}}$ . Keep value of x and y in equation (1) $\implies\:(1+4)\:=\:5$ $\implies\:5\:=\:5$ L.H.S.= R.H.S. So, we can say that value of x and y are exits this equation .

41.

X+y=5;x-y=3 solve.

Answer»

$\large{\underline{\underline{\mathfrak{\green{\sf{QUESTION:-}}}}}}$ .

$\:(<klux>X</klux>+y)\:=\:5$

And,

$\:(x-y)\:=\:3$

Solve this

$\large{\underline{\underline{\mathfrak{\sf{SOLUTION:-}}}}}$ .

$\large{\underline{\mathfrak{\sf{Given\:Equation:-}}}}$ .

$\:(x+y)\:=\:5$ ...(1)

$\:(x-y)\:=\:3$ .....(2)

$\large{\underline{\underline{\mathfrak{\sf{Find\:Here:-}}}}}$ .

VALUE of x and y

$\large{\underline{\underline{\mathfrak{\sf{Explanation:-}}}}}$ .

[ SUM of these equation ]

$\implies\:(2y)\:=\:8$

$\implies\:y\:=\frac{8}{2}$

$\implies\boxed{\boxed{\:y\:=\:4}}$

Now, keep value of y in (1)

$\implies\:(x+4)\:=\:5$

$\implies\:x\:=\:5-4$

$\implies\boxed{\boxed{\:x\:=\:1}}$

$\large{\underline{\underline{\mathfrak{\green{\sf{Answer:-}}}}}}$ .

$\:Value\:of\:x\:=\:1$

$\:Value\:of\:y\:=\:4$

$\large{\underline{\underline{\mathfrak{\green{\sf{Answers:Verification:-}}}}}}$ .

Keep value of x and y in equation (1)

$\implies\:(1+4)\:=\:5$

$\implies\:5\:=\:5$

L.H.S.= R.H.S.

So, we can say that value of x and y are exits this equation .

Discussion

42.	I3 mails-Ecarespe P and0.47arein toomintegersof the tow nand qtogExpress 0.47 in form of the p/q where p and q are integers and q=o
Answer» Step-by-step explanation: 47/100=p/q 47q=100p substitute q=0 47 (0)=100p 0/100=p p=0

42.

I3 mails-Ecarespe P and0.47arein toomintegersof the tow nand qtogExpress 0.47 in form of the p/q where p and q are integers and q=o

Answer»

Step-by-step explanation:

47/100=p/q

47q=100p

substitute q=0

47 (0)=100p

0/100=p

p=0

Discussion

43.	On a certain sum the interest paid after 3 years is rs 450 at 5% rate of interest per annum. Find the sum
Answer» ANSWER: RS 3000 Step-by-step EXPLANATION: S.I=PRT/100 450=P53/100 450100=P15 P=450100/15 P=30100 P=3000

43.

On a certain sum the interest paid after 3 years is rs 450 at 5% rate of interest per annum. Find the sum

Answer»

ANSWER:

RS 3000

Step-by-step EXPLANATION:

S.I=P*R*T/100

450=P*5*3/100

450*100=P*15

P=450*100/15

P=30*100

P=3000

Discussion

44.	X BY 5 = X - 32 BY 9
Answer» ANSWER:- X/5 = X - 32/9 32/9 = 4X/5 X = 40/9 or 4.44

44.

X BY 5 = X - 32 BY 9

Answer»

ANSWER:-

X/5 = X - 32/9

32/9 = 4X/5

X = 40/9 or 4.44

Discussion

45.	If an isosceles triangle has base b and equal sides a, then its area will be
Answer» $\underline {\blue {Given :}}$ $ABC \:is \:an \: isosceles \: triangle.$ $AB = AC = a , \:and \: BC = b$ $\underline {\blue {Construction :}}$ $Draw \: AD \: perpendicular \:to \: BC$ $\underline {\blue {Solution:}}$ $In \: \triangle ABD , \\\angle {ADB} = 90\degree ,\\BD = \frac{BC}{2} = \frac{b}{2} \: ( Altitude \:bisects \: base )$ $AB^{2} = BD^{2} + AD^{2} \\(By \: Pythagoras \: theorem )$ $\implies a^{2} = \big(\frac{b}{2}\big)^{2} + h^{2}$ $\implies h^{2} = a^{2} - \big(\frac{b}{2}\big)^{2}$ $\implies h^{2} = \frac{(4a^{2} - b^{2})}{4}$ $\implies h = \sqrt{\frac{(4a^{2} - b^{2})}{4}}$ $\implies h = \frac{\sqrt{(4a^{2} - b^{2})}}{2}$ $\red { Area \: of \:\triangle ABC} = \frac{1}{2} \times base \times corresponding \:height\\= \frac{1}{2} \times BC \times AD$ $= \frac{1}{2} \times b \times \frac{\sqrt{(4a^{2} - b^{2})}}{2}[From \:(1) ]$ $= \frac{b\sqrt{(4a^{2} - b^{2})}}{4}$ THEREFORE., $\red { Area \: of \:\triangle ABC}$ $\green { = \frac{b\sqrt{(4a^{2} - b^{2})}}{4}}$ •••♪

45.

If an isosceles triangle has base b and equal sides a, then its area will be

Answer»

$\underline {\blue {Given :}}$

$ABC \:is \:an \: isosceles \: triangle.$

$AB = AC = a , \:and \: BC = b$

$\underline {\blue {Construction :}}$

$Draw \: AD \: perpendicular \:to \: BC$

$\underline {\blue {Solution:}}$

$In \: \triangle ABD , \\\angle {ADB} = 90\degree ,\\BD = \frac{BC}{2} = \frac{b}{2} \: ( Altitude \:bisects \: base )$

$AB^{2} = BD^{2} + AD^{2} \\(By \: Pythagoras \: theorem )$

$\implies a^{2} = \big(\frac{b}{2}\big)^{2} + h^{2}$

$\implies h^{2} = a^{2} - \big(\frac{b}{2}\big)^{2}$

$\implies h^{2} = \frac{(4a^{2} - b^{2})}{4}$

$\implies h = \sqrt{\frac{(4a^{2} - b^{2})}{4}}$

$\implies h = \frac{\sqrt{(4a^{2} - b^{2})}}{2}$

$\red { Area \: of \:\triangle ABC} = \frac{1}{2} \times base \times corresponding \:height\\= \frac{1}{2} \times BC \times AD$

$= \frac{1}{2} \times b \times \frac{\sqrt{(4a^{2} - b^{2})}}{2}[From \:(1) ]$

$= \frac{b\sqrt{(4a^{2} - b^{2})}}{4}$

THEREFORE.,

$\red { Area \: of \:\triangle ABC}$

$\green { = \frac{b\sqrt{(4a^{2} - b^{2})}}{4}}$

•••♪

Discussion

46.	3m^2n^3 - 2mn^2 +15mn divided by 3mn
Answer» $Given \: \frac{3m^{2}n^{3} - 2mn^{2} + 15mn}{<klux>3MN</klux>}$ /* DIVIDE each TERM by 3mn , we GET */ $= \frac{3m^{2}n^{3}}{3mn} - \frac{2mn^{2}}{3mn} + \frac{15mn}{3mn}$ $= \frac{3mn \times mn^{2}}{3mn} - \frac{mn \times 2n}{3mn} + \frac{3mn\times 5}{3mn}$ $= mn^{2} - \frac{2}{3} n + 5$ THEREFORE., $\red {\frac{3m^{2}n^{3} - 2mn^{2} + 15mn}{3mn}}$ $\green { =mn^{2} - \frac{2}{3} n + 5}$ •••♪

46.

3m^2n^3 - 2mn^2 +15mn divided by 3mn

Answer»

$Given \: \frac{3m^{2}n^{3} - 2mn^{2} + 15mn}{<klux>3MN</klux>}$

/* DIVIDE each TERM by 3mn , we GET */

$= \frac{3m^{2}n^{3}}{3mn} - \frac{2mn^{2}}{3mn} + \frac{15mn}{3mn}$

$= \frac{3mn \times mn^{2}}{3mn} - \frac{mn \times 2n}{3mn} + \frac{3mn\times 5}{3mn}$

$= mn^{2} - \frac{2}{3} n + 5$

THEREFORE.,

$\red {\frac{3m^{2}n^{3} - 2mn^{2} + 15mn}{3mn}}$

$\green { =mn^{2} - \frac{2}{3} n + 5}$

•••♪

Discussion

47.	a large office desk has an area of 42ft squared. if the width is 3.5ft write an equation to represent the area
Answer» ANSWER: hope it helps you SEE the ATTACHMENT for further information

47.

a large office desk has an area of 42ft squared. if the width is 3.5ft write an equation to represent the area

Answer»

ANSWER:

hope it helps you SEE the ATTACHMENT for further information

Discussion

48.	The total surface area of a cone whose radius is and short height21 isa) 2 (1 + r)b) (1 + 1/4)c)(1 + r)d)2011
Answer» $\blue{\underline {\underline {Answer: }}}$ The TSA of a CYLINDER is 2πrh + 2πr^2

48.

The total surface area of a cone whose radius is and short height21 isa) 2 (1 + r)b) (1 + 1/4)c)(1 + r)d)2011

Answer»

$\blue{\underline {\underline {Answer: }}}$

The TSA of a CYLINDER is 2πrh + 2πr^2

Discussion

49.	5. Find x, if distance between L(x, 7) and M(1, 15) is 10.
Answer» ANSWER: Step-by-step EXPLANATION:

49.

5. Find x, if distance between L(x, 7) and M(1, 15) is 10.

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

50.	According to the general equation for conditional probability, If P(A∩B) = 3/4 and P(B) = 4/5 what is P(A l B)
Answer» ANSWER: i HOPE you LIKE it.......

50.

According to the general equation for conditional probability, If P(A∩B) = 3/4 and P(B) = 4/5 what is P(A l B)

Answer»

ANSWER:

i HOPE you LIKE it.......

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

UIA bag contains 12 balls out of which x are black balls. Find the probability of getting ablack ball if one ball is drawn. If 6 more blacks balls are added in the bag. the probability of getting a black ball will be double. Find x​

Find value20% of80​

-57y =1234-5y+76890=777880

PLZ HELP!!!Two trains leave the station at the same time, one heading west and the other east. The westbound train travels 18 miles per hour slower than the eastbound train. If the two trains are 570 miles apart after 3 hours, what is the rate of the westbound train?

6826 ka square root

What will come in the place of the question mark(?) in the following number series? 5,4,7,20,79,?​

Is60 - 70 70 - 80 80 - 90Frequency25, 20me work Ganesh takes 10 days more than Gajanan. If both wodoing some work Gan810logether, theybey complete the work in 12 days. Find the number of days taken bycomplete the work, if he works alone.Ganesh to complasimultanen​

6826 ka square root6826 ka square root

What come adjectly between 0 and 4​

find the perimeter and area of the following rectangle length is equal to 20 M breadth is equal to 15​

Concentration of oresGravitation based separationLeaching​

Show that (4,5) (7,6) (4,8) (1,2) from the vertices of quadrilateral ​

Length is equal to 20 metre​

Differentiate using first principles:​

Please help me to solve it somebody​

1. If two sides of a triangle are of lengths 7 cm and 3 cm, then the third side must be(a) > 10 cm(b) < 10 cm(c) = 10 cm(d) S 10 cm1 (notoncle Requals​

How to prove the pythagoras theorem

Probability of getting exactly 21 in an opening hand = 0.048

If N={all positive integers less than or equal to 50}A={all even numbers less than or equal to 50} B={all odd positive number less than or equal 39}C={all integers X:101 List out all the numbers of N 2List out all the numbers of A3 List out all the numbers of B4 List out all the numbers of C

2.4 hrs

Solve the following equation by factorisation:​

5 times 5th term of an A.P = 8 times 8th term , then show that 13th term is 0​

Ans is in attachment

Hope it helped and HANDWRITING is understood.

Mark the BRAINLIST ans with thanks.

Follow me for more GREAT ans....

I need some help with b)

The interior angles of a hexagon form an arithmetic sequence.The largest angle is 130°. Determine the sequence formed by angles of the hexagon.

5. If 5^n-2 x 3^2n–3 = 135, find the value of n.​

What are the numbers exactly between 0 and 4?

Work out the area of a rectangle with base, b = 16mm and perimeter, P = 48mm.

If yesterday was Friday, then tomorrow will be which day(a) Sunday (b) Monday (c) Tuesday (d) Wednesday​

What number comes between 0 and 4

(1/x+1) +(2/x+2)=(4/x+4) pls koi solve karo brainliest mark karungi

Answer 5 upon 6 + 14 upon 20​

Find the perimeter and area of the following rectangle length is equal to 20 breadth is equal to 15​

Solve following simultaneous equation 1/x+1/y=12 ; 3/x-2/y=1​

If the equations x - 2y = 3 and 3x + ky = 1 have an unique solution, then(A) k=-6(B) k -6(C) k=0(D) k0​

X/10^-2 - 3 ×10^10 t solve step by step​

PLEASE MARK AS BRAINLIEST ANSWER :)

Please solve this ASAP.

Answer is -40 but how​

Pls answer the 4 question by taking help of the image given above​

23. The position of how many digits will remaunchanged if the digits in number 35647nemanged in ascending order from left to right(1)None (2) One (3) two(4)three​

The diagonals of a rhombus measure 16 cm and 30 cm. Find its perimeter​

X+y=5;x-y=3 solve. ​

L.H.S.= R.H.S.

I3 mails-Ecarespe P and0.47arein toomintegersof the tow nand qtogExpress 0.47 in form of the p/q where p and q are integers and q=o

On a certain sum the interest paid after 3 years is rs 450 at 5% rate of interest per annum. Find the sum​

X BY 5 = X - 32 BY 9​

If an isosceles triangle has base b and equal sides a, then its area will be​

3m^2n^3 - 2mn^2 +15mn divided by 3mn​

a large office desk has an area of 42ft squared. if the width is 3.5ft write an equation to represent the area

The total surface area of a cone whose radius is and short height21 isa) 2 (1 + r)b) (1 + 1/4)c)(1 + r)d)2011​

5. Find x, if distance between L(x, 7) and M(1, 15) is 10.​

According to the general equation for conditional probability, If P(A∩B) = 3/4 and P(B) = 4/5 what is P(A l B)

UIA bag contains 12 balls out of which x are black balls. Find the probability of getting ablack ball if one ball is drawn. If 6 more blacks balls are added in the bag. the probability of getting a black ball will be double. Find x

Find value20% of80

What will come in the place of the question mark(?) in the following number series? 5,4,7,20,79,?

Is60 - 70 70 - 80 80 - 90Frequency25, 20me work Ganesh takes 10 days more than Gajanan. If both wodoing some work Gan810logether, theybey complete the work in 12 days. Find the number of days taken bycomplete the work, if he works alone.Ganesh to complasimultanen

What come adjectly between 0 and 4

find the perimeter and area of the following rectangle length is equal to 20 M breadth is equal to 15

Concentration of oresGravitation based separationLeaching

Show that (4,5) (7,6) (4,8) (1,2) from the vertices of quadrilateral

Length is equal to 20 metre

Differentiate using first principles:

Please help me to solve it somebody

1. If two sides of a triangle are of lengths 7 cm and 3 cm, then the third side must be(a) > 10 cm(b) < 10 cm(c) = 10 cm(d) S 10 cm1 (notoncle Requals

Solve the following equation by factorisation:

5 times 5th term of an A.P = 8 times 8th term , then show that 13th term is 0

5. If 5^n-2 x 3^2n–3 = 135, find the value of n.

If yesterday was Friday, then tomorrow will be which day(a) Sunday (b) Monday (c) Tuesday (d) Wednesday

Answer 5 upon 6 + 14 upon 20

Find the perimeter and area of the following rectangle length is equal to 20 breadth is equal to 15

Solve following simultaneous equation 1/x+1/y=12 ; 3/x-2/y=1

If the equations x - 2y = 3 and 3x + ky = 1 have an unique solution, then(A) k=-6(B) k -6(C) k=0(D) k0

X/10^-2 - 3 ×10^10 t solve step by step

Answer is -40 but how

Pls answer the 4 question by taking help of the image given above

23. The position of how many digits will remaunchanged if the digits in number 35647nemanged in ascending order from left to right(1)None (2) One (3) two(4)three

The diagonals of a rhombus measure 16 cm and 30 cm. Find its perimeter

X+y=5;x-y=3 solve.

On a certain sum the interest paid after 3 years is rs 450 at 5% rate of interest per annum. Find the sum

X BY 5 = X - 32 BY 9

If an isosceles triangle has base b and equal sides a, then its area will be

3m^2n^3 - 2mn^2 +15mn divided by 3mn

The total surface area of a cone whose radius is and short height21 isa) 2 (1 + r)b) (1 + 1/4)c)(1 + r)d)2011

5. Find x, if distance between L(x, 7) and M(1, 15) is 10.