332354 + Interview Questions in Secondary School in Math

1.	Question from class 9 mathematics. Please solve and I will mark you brainliest.
Answer» ANSWER: ${(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab$ a+b = 10 ${a}^{2} + {b}^{2} = <klux>58</klux>$ Putting the VALUE in the formula 100 = 58 + 2ab 100-58 = 2ab 42 = 2ab $\frac{42}{2} = ab$ 21 = ab. ${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab(a + b)$ ${a}^{3} + {b}^{3} = {(a + b)}^{3} - 3ab(a + b)$ ${(a + b)}^{3} = {10}^{3} - 3(21)(58)$ =1000 - 3654 = -2654

1.

Question from class 9 mathematics. Please solve and I will mark you brainliest.

Answer»

ANSWER:

${(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab$

a+b = 10

${a}^{2} + {b}^{2} = <klux>58</klux>$

Putting the VALUE in the formula

100 = 58 + 2ab

100-58 = 2ab

42 = 2ab

$\frac{42}{2} = ab$

21 = ab.

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab(a + b)$

${a}^{3} + {b}^{3} = {(a + b)}^{3} - 3ab(a + b)$

${(a + b)}^{3} = {10}^{3} - 3(21)(58)$

=1000 - 3654

= -2654

Discussion

2.	What least number must be subtracted from 13801 to get a number exactly divisible by 87
Answer» Answer: 55 to be SUBTRACTED from 13801 13801 - 55 = 13746 ÷ 87 = 158

2.

What least number must be subtracted from 13801 to get a number exactly divisible by 87

Answer»

Answer:

55 to be SUBTRACTED from 13801

13801 - 55 = 13746 ÷ 87 = 158

Discussion

3.	If cos theta equal to 2 by 3 then find the value of 2 sec square theta + 2 10 squared theta minus 7
Answer» Answer: Step-by-step EXPLANATION: I suppose the equation is 2(secθ)^2 + (tanθ)^2 - 7. cosθ=2/3 (Given) So to find the value of secθ we can use secθ = 1/(cosθ) secθ = 1/(2/3) = 3/2 We can also use the THEOREM (tanθ)^2 = (secθ)^2 - 1 So now the equation is 2(secθ)^2 + [(secθ)^2 - 1] - 7 By solving this we get 3(secθ)^2 - 8 By PUTTING the value of secθ we get [3*(4/9)] - 8 = (4/3) - 8 = -20/3

3.

If cos theta equal to 2 by 3 then find the value of 2 sec square theta + 2 10 squared theta minus 7

Answer»

Answer:

Step-by-step EXPLANATION:

I suppose the equation is 2(secθ)^2 + (tanθ)^2 - 7.

cosθ=2/3 (Given)

So to find the value of secθ we can use secθ = 1/(cosθ)

secθ = 1/(2/3) = 3/2

We can also use the THEOREM (tanθ)^2 = (secθ)^2 - 1

So now the equation is 2(secθ)^2 + [(secθ)^2 - 1] - 7

By solving this we get 3(secθ)^2 - 8

By PUTTING the value of secθ we get [3*(4/9)] - 8 = (4/3) - 8 = -20/3

Discussion

4.	Simplify the following : (6√5-2√3) 3√5-2√5)
Answer» (6root5-2root3)(ROOT5) 30-2root15 root15 (2root15-1)

4.

Simplify the following : (6√5-2√3) 3√5-2√5)

Answer»

(6root5-2root3)(ROOT5)

30-2root15

root15 (2root15-1)

Discussion

5.	Simplify bodmas 17+ [11 - {8 + 3 - (9 of 6 + 7-13 X 4)}]
Answer» ANSWER: HEYY BUDDY, here's ur answer Applying BODMAS rule, Refer to the IMAGE.... Hope it is clear....

5.

Simplify bodmas 17+ [11 - {8 + 3 - (9 of 6 + 7-13 X 4)}]

Answer»

ANSWER:

HEYY BUDDY, here's ur answer

Applying BODMAS rule,

Refer to the IMAGE....

Hope it is clear....

Discussion

6.	Find the number 25÷4% is 2
Answer» ANSWER is 50 because when we DIVIDE 25/4% their answer is 1

6.

Find the number 25÷4% is 2

Answer»

ANSWER is 50 because when we

DIVIDE 25/4% their answer is 1

Discussion

7.	Find the lcm of 3/2and 5/4
Answer» ANSWER: LCM of 3 2 Step-by-step explanation: 3×2=6 5×2×2=20

7.

Find the lcm of 3/2and 5/4

Answer»

ANSWER:

LCM of 3 2

Step-by-step explanation:

3×2=6

5×2×2=20

Discussion

8.	Sample paper rsmssb investigater
Answer» ANSWER: Step-by-step EXPLANATION: SAMPLE PAPER of what???

8.

Sample paper rsmssb investigater

Answer»

ANSWER:

Step-by-step EXPLANATION:

SAMPLE PAPER of what???

Discussion

9.	150 metre lambi rail gadi Apne se viprit Disha Mein acche kilometre Prati ghante ki gati se viprit Disha Mein Bhag Rahe vyakti ko 6 2nd may Parker Jati Hai railgadi ki Chaal kitni hai
Answer» ANSWER: Step-by-step explanation: NIKALNA KYA HAI bhai?????

9.

150 metre lambi rail gadi Apne se viprit Disha Mein acche kilometre Prati ghante ki gati se viprit Disha Mein Bhag Rahe vyakti ko 6 2nd may Parker Jati Hai railgadi ki Chaal kitni hai

Answer»

ANSWER:

Step-by-step explanation:

NIKALNA KYA HAI bhai?????

Discussion

10.	If x=y and w=z, prove that l is parallel to m
Answer» ANSWER: this cannot be ANSWERED WITHOUT the image Step-by-step explanation: PLEASE attach with question

10.

If x=y and w=z, prove that l is parallel to m

Answer»

ANSWER:

this cannot be ANSWERED WITHOUT the image

Step-by-step explanation:

PLEASE attach with question

Discussion

11.	2. Money, Money, Money……Who‟s That?Who are the people on our new banknotes? Choose one of them and research what they are famous. Why do you think they were chosen to be represented on our currency?Money Maker:Create a new Indian coin or banknote. Illustrate the front and back. Explain why you chose the person, bird, animal, plant, pattern, values, etc.ffffffaaaasssstttt
Answer» ANSWER: Step-by-step EXPLANATION: COIN with SHINCHAN's picture embossed on it. Reason: I love shinchan

11.

2. Money, Money, Money……Who‟s That?Who are the people on our new banknotes? Choose one of them and research what they are famous. Why do you think they were chosen to be represented on our currency?Money Maker:Create a new Indian coin or banknote. Illustrate the front and back. Explain why you chose the person, bird, animal, plant, pattern, values, etc.ffffffaaaasssstttt

Answer»

ANSWER:

Step-by-step EXPLANATION:

COIN with SHINCHAN's picture embossed on it.

Reason: I love shinchan

Discussion

12.	Answer this puzzle a 49b 243c 512d 729
Answer» ANSWER: plz CHECK OPTIONS. The Correct answer Is 343

12.

Answer this puzzle a 49b 243c 512d 729

Answer»

ANSWER:

plz CHECK OPTIONS. The Correct answer Is 343

Discussion

13.	three ropes of different lengths 36m, 84m and 60m are cut in equal pieces. what is the greatest possible length of each piece
Answer» ANSWER: PLZ TAKE LCM of GIVEN numbers Ans= 1260

13.

three ropes of different lengths 36m, 84m and 60m are cut in equal pieces. what is the greatest possible length of each piece

Answer»

ANSWER:

PLZ TAKE LCM of GIVEN numbers

Ans= 1260

Discussion

14.	The product of two numbers is 1575 and their quotient is 9/7 Find the number.
Answer» *Here* is UR answer *hope* *it's* *HELP* u *please* *MARK* it as *BRAINLIST*

14.

The product of two numbers is 1575 and their quotient is 9/7 Find the number.

Answer»

Here is UR answer

hope it's HELP u

please MARK it as BRAINLIST

Discussion

15.	Write least 3-digits prime number
Answer» Answer: 101 is the PRIME number. Hope it will be helpful.if it is PLZ MARK me as BRAINLIEST

15.

Write least 3-digits prime number

Answer»

Answer:

101 is the PRIME number.

Hope it will be helpful.if it is PLZ MARK me as BRAINLIEST

Discussion

16.	If alpha, beta are the zeroes of a quadratic polynomial x^2-p(x+2)-c, then prove that (alpha+2)(beta+2)-4+c=0
Answer» ANSWER: *x² - p(x+1)-C = x² -px-p -c* *compare it with ax²+bx+c =0* *a= 1, B= -p , c= -p-c* *α and β are two zeroes* *i) sum of the zeros= -b/a* *α+β = - (-p)/1= p -----(1)* *ii) PRODUCT of the zeroes = c/a* *αβ = (-p-c) /1 = -p-c -----(2)* *now take* *now take lhs = (α+1)(β+1)* *= α(β+1) +1(β+1)* *=αβ +α +β +1* =-p-c+p+1 [from (2) and (1) ] -c+1 =1 -c =RHS

16.

If alpha, beta are the zeroes of a quadratic polynomial x^2-p(x+2)-c, then prove that (alpha+2)(beta+2)-4+c=0

Answer»

ANSWER:

x² - p(x+1)-C = x² -px-p -c

compare it with ax²+bx+c =0

a= 1, B= -p , c= -p-c

α and β are two zeroes

i) sum of the zeros= -b/a

α+β = - (-p)/1= p -----(1)

ii) PRODUCT of the zeroes = c/a

αβ = (-p-c) /1 = -p-c -----(2)

now take

now take lhs = (α+1)(β+1)

= α(β+1) +1(β+1)

=αβ +α +β +1

=-p-c+p+1 [from (2) and (1) ]

-c+1

=1 -c

=RHS

Discussion

17.	What is the identity of 3/5a) 5/3b) 3/5c) -3/5d) None of the above
Answer» ANSWER: OPTION B Is CORRECT because It is correct

17.

What is the identity of 3/5a) 5/3b) 3/5c) -3/5d) None of the above

Answer»

ANSWER:

OPTION B Is CORRECT because It is correct

Discussion

18.	State whether the given statements are trueor false.a) (-20) X0 =(-20)b) 27 x 10-27x2=27x (0+2)_c) 0+(-12)=0d) (-16)x1=0e) 125 x 99 - 125 = 125 x (99+1).f) -52+(-1)=52Verify the associative property ofmultiplication, ie., (x Xy) xz=zx(x2).a) x=-2, y = 3 and z=-4b) x=-5, y=-12 and z=8
Answer» *Heya❤ a) False* b) *False* c) *False* d) *False* e) *False* f) *False* Hope it HELPS you ✌✌✌

18.

State whether the given statements are trueor false.a) (-20) X0 =(-20)b) 27 x 10-27x2=27x (0+2)_c) 0+(-12)=0d) (-16)x1=0e) 125 x 99 - 125 = 125 x (99+1).f) -52+(-1)=52Verify the associative property ofmultiplication, ie., (x Xy) xz=zx(x2).a) x=-2, y = 3 and z=-4b) x=-5, y=-12 and z=8

Answer»

Heya❤

a) False

b) False

c) False

d) False

e) False

f) False

Hope it HELPS you

✌✌✌

Discussion

19.	150 metre lambi rail gadi Apne se viprit Disha Mein 6 kilometre Prati ghante ki gati se viprit Disha Mein Bhag Rahe vyakti ko 6 2nd may Parker Jati Hai railgadi ki Chaal kitni hai
Answer» ESKA MATLAB KYA HAI BRO.

Discussion

20.	Find the pythagorean triplet whose smallest number is 12
Answer» ANSWER - LOOK at the PICTURE and you can FIND your answer.......

20.

Find the pythagorean triplet whose smallest number is 12

Answer»

ANSWER - LOOK at the PICTURE and you can FIND your answer.......

Discussion

21.	Rationlise the denominator :- 2÷7+4√3
Answer» → ${\sf{\pink{\underline{Rationalizing \:the\:denominator}}}}$ : when we have the denominator of a FRACTION as an IRRATIONAL , we need to convert it into a rational number by MULTIPLYING with a particular number. This is called rationalizing the denominator . Here the denominator is (7 + 4√3) so in order to rationalise , we will multiply and divide by the opposite sign i,e ( 7 - 4√3) As we multiply and divide simultaneously , it doesn't EFFECT the ORIGINAL value. So we have, $= >\frac{2}{7 + 4 \sqrt{3} } \\ \\ = > \frac{2}{7 + 4 \sqrt{3} } \times \frac{7 - 4 \sqrt{3} }{7 - 4 \sqrt{3} } \\ \\ = > \frac{2(7 - 4 \sqrt{3}) }{(7) {}^{2} - (4 \sqrt{3}) {}^{2} } = \frac{14 - 8 \sqrt{3} }{49 - 48} \\ \\ = > \frac{14 - 8 \sqrt{3} }{1}$ = 14 - 8√3 •°• ${\bold{\underline{\underline{The\:Rationalized \:value\:is}}}}$ → 14 - 8√3 ____________________________________________________

21.

Rationlise the denominator :- 2÷7+4√3

Answer»

→ ${\sf{\pink{\underline{Rationalizing \:the\:denominator}}}}$ : when we have the denominator of a FRACTION as an IRRATIONAL , we need to convert it into a rational number by MULTIPLYING with a particular number. This is called rationalizing the denominator .

Here the denominator is (7 + 4√3) so in order to rationalise , we will multiply and divide by the opposite sign i,e ( 7 - 4√3)

As we multiply and divide simultaneously , it doesn't EFFECT the ORIGINAL value.

So we have,

$= >\frac{2}{7 + 4 \sqrt{3} } \\ \\ = > \frac{2}{7 + 4 \sqrt{3} } \times \frac{7 - 4 \sqrt{3} }{7 - 4 \sqrt{3} } \\ \\ = > \frac{2(7 - 4 \sqrt{3}) }{(7) {}^{2} - (4 \sqrt{3}) {}^{2} } = \frac{14 - 8 \sqrt{3} }{49 - 48} \\ \\ = > \frac{14 - 8 \sqrt{3} }{1}$

= 14 - 8√3

•°• ${\bold{\underline{\underline{The\:Rationalized \:value\:is}}}}$ → 14 - 8√3

____________________________________________________

Discussion

22.	Hi friends please help me
Answer» this is your ANSWER HOPE it HELPS

Discussion

23.	Find the sum of 1001 and - 13
Answer» ANSWER: 988 Step-by-step explanation: 1001+(-13) 1001-13 988 this is your answer

23.

Find the sum of 1001 and - 13

Answer»

ANSWER:

988

Step-by-step explanation:

1001+(-13)

1001-13

988

this is your answer

Discussion

24.	What are the first three nos. of Pi..??Have a great day!
Answer» 3.14..... 22/7... .... FOLLOW me GUYS... HOPE this HELPS you

24.

What are the first three nos. of Pi..??Have a great day!

Answer»

3.14.....

22/7...

.... FOLLOW me GUYS...

HOPE this HELPS you

Discussion

25.	6557&546-(76;86) isn't that
Answer» What u r ASKING can u EXPLAIN a BIT more PLEASE

25.

6557&546-(76;86) isn't that

Answer»

What u r ASKING can u EXPLAIN a BIT more PLEASE

Discussion

26.	Solve this sum . step by step explanation
Answer» Your ANSWER is here BUDDY. ....

26.

Solve this sum . step by step explanation

Answer»

Your ANSWER is here BUDDY.

....

Discussion

27.	Find mean median mode of following data—Class interval frequency0-20 1220-40 1840-60 1560-80 2580-100 26100-120 15120-140 09
Answer» mean=120/7=17.14 median=15 mode=15

27.

Find mean median mode of following data—Class interval frequency0-20 1220-40 1840-60 1560-80 2580-100 26100-120 15120-140 09

Answer»

mean=120/7=17.14

median=15

mode=15

Discussion

28.	Please solve thissss
Answer» Step-by-step EXPLANATION: CHECK it out PLEASE MAY be it HELP you

28.

Please solve thissss

Answer»

Step-by-step EXPLANATION:

CHECK it out PLEASE MAY be it HELP you

Discussion

29.	Simplify the following (√11-4) (√2+3)
Answer» ANSWER: by MULTIPLYING we find √22+3√11-4√2-12

29.

Simplify the following (√11-4) (√2+3)

Answer»

ANSWER:

by MULTIPLYING we find

√22+3√11-4√2-12

Discussion

30.	the cost of flat is 21,35,690 in a colony. A company decide to purchase 18 such flats for its executives in the colony. What will be the total expenditure of the company
Answer» Answer: 38442420 Step-by-step EXPLANATION: COST of ONE FLAT-2135690 cost of 18 flat-(2135690×18) -38442420

30.

the cost of flat is 21,35,690 in a colony. A company decide to purchase 18 such flats for its executives in the colony. What will be the total expenditure of the company

Answer»

Answer:

38442420

Step-by-step EXPLANATION:

COST of ONE FLAT-2135690

cost of 18 flat-(2135690×18)

-38442420

Discussion

31.	Make the greatest and smallest 6-digit numbers using any one digit twice.a) 905684 b) 247135
Answer» Answer: 1)GREATEST :- 986540 smallest:-045689 2)greatest:- 754321 smallest:- 123457

31.

Make the greatest and smallest 6-digit numbers using any one digit twice.a) 905684 b) 247135

Answer»

Answer:

1)GREATEST :- 986540

smallest:-045689

2)greatest:- 754321

smallest:- 123457

Discussion

32.	Kumar 's age is five times that of Sohan 's. After 5 years Kumar will be four times as old as Sohan . What are their present ages?
Answer» ANSWER: CHECK if it is CORRECT.....

32.

Kumar 's age is five times that of Sohan 's. After 5 years Kumar will be four times as old as Sohan . What are their present ages?

Answer»

ANSWER:

CHECK if it is CORRECT.....

Discussion

33.	Find the roots of the equation 2x2– 5x + 3 = 0 by factorisation.
Answer» $\huge \boxed{ \underline{ \underline{ \bf{Answer}}}}$ To Find :- The ROOTS of the GIVEN equation! 2x²– 5x + 3 = 0 Using middle term splitting METHOD ! 2x²– 3x - 2x + 3 = 0 x ( 2x - 3 ) - 1 ( 2x - 3 ) = 0 ( 2x - 3 ) = 0 , ( x - 1 ) = 0 x = 3/2 , x = 1 Hence, 3/2 and 1 are the roots of the equation.

33.

Find the roots of the equation 2x2– 5x + 3 = 0 by factorisation.

Answer»

$\huge \boxed{ \underline{ \underline{ \bf{Answer}}}}$

To Find :- The ROOTS of the GIVEN equation!

2x²– 5x + 3 = 0

Using middle term splitting METHOD !

2x²– 3x - 2x + 3 = 0

x ( 2x - 3 ) - 1 ( 2x - 3 ) = 0

( 2x - 3 ) = 0 , ( x - 1 ) = 0

x = 3/2 , x = 1

Hence, 3/2 and 1 are the roots of the equation.

Discussion

34.	Find the sum of all positive integers less than 450
Answer» Answer: Step-by-step explanation: similar question First, consider all the positive integers less than 45. They range from 1 to 44, so their AVERAGE must be 1+442=22.5. Since there are 44 of them, their sum must be 22.5⋅44=990 . Next consider all the multiples of 3 among this collection of integers. They range from 3 to 42 so their average must be 3+422=22.5. There are 14 such NUMBERS, so their sum must be 22.5⋅14=315 . Since we know the sum of all those integers, and we know the sum of the multiples of THREE, the DIFFERENCE of those SUMS must be the sum of all those not divisible by three: 990−315=675 .

34.

Find the sum of all positive integers less than 450

Answer»

Answer:

Step-by-step explanation:

similar question

First, consider all the positive integers less than 45. They range from 1 to 44, so their AVERAGE must be 1+442=22.5. Since there are 44 of them, their sum must be 22.5⋅44=990

.

Next consider all the multiples of 3

among this collection of integers. They range from 3 to 42 so their average must be 3+422=22.5. There are 14 such NUMBERS, so their sum must be 22.5⋅14=315

.

Since we know the sum of all those integers, and we know the sum of the multiples of THREE, the DIFFERENCE of those SUMS must be the sum of all those not divisible by three: 990−315=675

.

Discussion

35.	Find 4x(-8)solution Of Class 7
Answer» ANSWER: this -32 is your answer.

35.

Find 4x(-8)solution Of Class 7

Answer»

ANSWER:

this -32 is your answer.

Discussion

36.	What should be added to 1 upon 2 + 1 upon 3 + 1 upon 5 to get 3
Answer» 1/2 + 1/3 + 1/4 + A = 3 13/12 + A = 3 A = 3 - 13/12 = 23/12 HOPE it HELPS

36.

What should be added to 1 upon 2 + 1 upon 3 + 1 upon 5 to get 3

Answer»

1/2 + 1/3 + 1/4 + A = 3

13/12 + A = 3

A = 3 - 13/12 = 23/12

HOPE it HELPS

Discussion

37.	If x=(7+5root 2),then (x^2+1/x^2)=?
Answer» ANSWER: CHECK WHETHER it is CORRECT or not, acc. to me it is 100%correct.

37.

If x=(7+5root 2),then (x^2+1/x^2)=?

Answer»

ANSWER:

CHECK WHETHER it is CORRECT or not, acc. to me it is 100%correct.

Discussion

38.	Place value of 0 in the he number of 28305479
Answer» PLACE VALUE of 0 in 28305479 is 10000 ten THOUSAND place

38.

Place value of 0 in the he number of 28305479

Answer»

PLACE VALUE of 0 in 28305479 is 10000

ten THOUSAND place

Discussion

39.	Express the following expression in the form of p by q :a) 0.378 (78)in bar
Answer» Answer: 0378/1000...........

39.

Express the following expression in the form of p by q :a) 0.378 (78)in bar

Answer»

Answer:

0378/1000...........

Discussion

40.	Write the smallest and greatest no of 4-digit using all the digits 8,0,5
Answer» SMALLEST is 5508. Greatest is 8805.

40.

Write the smallest and greatest no of 4-digit using all the digits 8,0,5

Answer»

SMALLEST is 5508.

Greatest is 8805.

Discussion

41.	If two lines intersects, verify that vertically opposite angles are equal
Answer» ANSWER: Yes Step-by-step EXPLANATION: OPPOSITE ANGLES are equal ,by the vertically opposite angle

41.

If two lines intersects, verify that vertically opposite angles are equal

Answer»

ANSWER:

Yes

Step-by-step EXPLANATION:

OPPOSITE ANGLES are equal ,by the vertically opposite angle

Discussion

42.	A rope is 10 m and 67 CM long. Another rope is 16m and 32 CM long.
Answer» Answer: M CM 10 67 (+)16 32 ---------------------- 2 6 9 9 ------------------------

42.

A rope is 10 m and 67 CM long. Another rope is 16m and 32 CM long.

Answer»

Answer:

M CM

10 67

(+)16 32

----------------------

2 6 9 9

------------------------

Discussion

43.	If HCF and LCM of two number are respectively 24 and 192 .If one number is 48 then find the other number.
Answer» Step-by-step EXPLANATION: SEE this above PAGES...........

43.

If HCF and LCM of two number are respectively 24 and 192 .If one number is 48 then find the other number.

Answer»

Step-by-step EXPLANATION:

SEE this above PAGES...........

Discussion

44.	Check your text book how many pairs of its edges are parallel to each other
Answer» TWO pairs of EDGE of TEXTBOOK are PARALLEL from ONE side

Discussion

45.	Q. 1. answer all the questions: 1) what is descriptive research?
Answer» Descriptive research is USED to describe CHARACTERISTICS of a POPULATION or phenomenon being studied. It does not answer questions about how/when/why the characteristics occurred. Thus, descriptive research cannot be used as the BASIS of a CAUSAL relationship, where one variable affects another. pl. mark brainliest

Discussion

46.	2√5 + 3√2/2√5 - 3√2 rationalize the denominator.
Answer» ANSWER: $19 + 6 \sqrt{3}$ HOPE IT HELPS YOU MARK ME ON BRAINLIEST

46.

2√5 + 3√2/2√5 - 3√2 rationalize the denominator.

Answer»

ANSWER:

$19 + 6 \sqrt{3}$

HOPE IT HELPS YOU

MARK ME ON BRAINLIEST

Discussion

47.	Find the value of a if x minus 1 is a factor of 4 x cube + 3 x square - 4 x + k
Answer» ANSWER: x-1=0 x=1 4x^3+3x^2-4x+k 4(1)^3+3(1)^2-4*1+k=0 4+3-4+k=0 k=-3

47.

Find the value of a if x minus 1 is a factor of 4 x cube + 3 x square - 4 x + k

Answer»

ANSWER:

x-1=0

x=1

4x^3+3x^2-4x+k

4*(1)^3+3*(1)^2-4*1+k=0

4+3-4+k=0

k=-3

Discussion

48.	write the condition to be satisfied by q so that a rational number p/q has terminating decimal expansion
Answer» Answer: q should be in the FORM of 2TO the power m +5 to the power n.....

48.

write the condition to be satisfied by q so that a rational number p/q has terminating decimal expansion

Answer»

Answer:

q should be in the FORM of 2TO the power m +5 to the power n.....

Discussion

49.	Which of the following is rational explain ? (root6+root9) and (root4+root9) define
Answer» √4+ √9 = 2+3 = 5 so its RATIONAL √6 +√9 = √6 +3 As √6 is IRRATIONAL and rational+ irrational is irrational So √6 +3 is irrational

49.

Which of the following is rational explain ? (root6+root9) and (root4+root9) define

Answer»

√4+ √9 = 2+3 = 5 so its RATIONAL

√6 +√9 = √6 +3

As √6 is IRRATIONAL and rational+ irrational is irrational So √6 +3 is irrational

Discussion

50.	Sana and Fatima participated in an apple race. The race was conducted in 6 parts In the first part, Sanuwon by 10 seconds. In the second part she lost by 1 minute, then won by 20 seconds in the third partand lost by 25 seconds in the fourth part, she lost by 37 seconds is the fifth part and won by 12 secondsin the last part. Who won the race finally?
Answer» Let us assume her winning time as positive and losing time as negative. Then we get; {10 + (-60) + 20 + (-25) + (-37) + 12} s = {42 - 122} s = - 80 s = - 1 minute 20 seconds So, Fatima won the match by 1min 20s. HOPE THIS COULD HELP!!!

50.

Sana and Fatima participated in an apple race. The race was conducted in 6 parts In the first part, Sanuwon by 10 seconds. In the second part she lost by 1 minute, then won by 20 seconds in the third partand lost by 25 seconds in the fourth part, she lost by 37 seconds is the fifth part and won by 12 secondsin the last part. Who won the race finally?

Answer»

Let us assume her winning time as positive and losing time as negative. Then we get;

{10 + (-60) + 20 + (-25) + (-37) + 12} s

= {42 - 122} s

= - 80 s

= - 1 minute 20 seconds

So, Fatima won the match by 1min 20s.

HOPE THIS COULD HELP!!!

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