332354 + Interview Questions in Secondary School in Math

1.	The sum ofa number and its reciprokel is 10/3 find the numbers
Answer» Step-by-step EXPLANATION: if it is HELPFUL to you MAKE it as BRAINLIST

1.

The sum ofa number and its reciprokel is 10/3 find the numbers

Answer»

Step-by-step EXPLANATION:

if it is HELPFUL to you MAKE it as BRAINLIST

Discussion

2.	2.35) (SecA + tanA)² -cosec A+1*- ಎಂದು ಸಾಧಿಸಿ...cosec 4-1
Answer» ANSWER: not ABLE to UNDERSTAND SIS........ SORRY

2.

2.35) (SecA + tanA)² -cosec A+1*- ಎಂದು ಸಾಧಿಸಿ...cosec 4-1

Answer»

ANSWER:

not ABLE to UNDERSTAND SIS........ SORRY

Discussion

3.	Please answer question no 40
Answer» ANSWER: which CLASS QUESTIONS these, are??

3.

Please answer question no 40

Answer»

ANSWER:

which CLASS QUESTIONS these, are??

Discussion

4.	What is the greatest multiple of any number
Answer» Answer: 40,42,44,46,48,50,52,54, 56,58,60,62,64,66,68,70, 72,74,76,78,80,82,84,86, 88,90,92,94,96,98.............FOLLOW me......XD

4.

What is the greatest multiple of any number

Answer»

Answer:

40,42,44,46,48,50,52,54, 56,58,60,62,64,66,68,70, 72,74,76,78,80,82,84,86, 88,90,92,94,96,98.............FOLLOW me......XD

Discussion

5.	Please answer the question 21.
Answer» <P>ANSWER: p is the answer of the 21 QUESTION

5.

Please answer the question 21.

Answer»

<P>ANSWER:

p is the answer of the 21 QUESTION

Discussion

6.	If a=2 + √3, then find the value of a- 1/a
Answer» Your ANSWER is $2 \sqrt{3}$ Explanations to this is in the GIVEN ATTACHMENT

6.

If a=2 + √3, then find the value of a- 1/a

Answer»

Your ANSWER is

$2 \sqrt{3}$

Explanations to this is in the GIVEN ATTACHMENT

Discussion

7.	D) Selecting a letter at random from theword SAMPLE
Answer» Step-by-step explanation: bhai AAPKA question SHI nhi HAI

7.

D) Selecting a letter at random from theword SAMPLE

Answer»

Step-by-step explanation:

bhai AAPKA question SHI nhi HAI

Discussion

8.	in NCERT textbook it is given that some others use the notation a r b if and only if etc.., which author uses that
Answer» YES,............ HOPE it is useful mark my ANSWERS BRAINLIST answers

8.

in NCERT textbook it is given that some others use the notation a r b if and only if etc.., which author uses that

Answer»

YES,............

HOPE it is useful

mark my ANSWERS BRAINLIST answers

Discussion

9.	5. The Total Surface Area of a cube is 864cm. Find its length6. A tank which is cuboidal in shape, has volume 6.4m, length and breadth of thebase are 2m and 1.6m respectively. Find the depth of the tank.
Answer» Step-by-step explanation: 5.For CUBE: TOTAL SURFACE AREA of cube=864 sq.cm $total \: surface \: area \: of \: cube = 6 {l }^{2} \\ 864 = 6 {l}^{2} \\ {l}^{2} = \frac{864}{6} \\ {l }^{2} = 144 \\ l =12cm$

9.

5. The Total Surface Area of a cube is 864cm. Find its length6. A tank which is cuboidal in shape, has volume 6.4m, length and breadth of thebase are 2m and 1.6m respectively. Find the depth of the tank.

Answer»

Step-by-step explanation:

5.For CUBE:

TOTAL SURFACE AREA of cube=864 sq.cm

$total \: surface \: area \: of \: cube = 6 {l }^{2} \\ 864 = 6 {l}^{2} \\ {l}^{2} = \frac{864}{6} \\ {l }^{2} = 144 \\ l =12cm$

Discussion

10.	30 POINTS AND BRAINLIEST ANSWeR TO DO ALL OF THIS AND SHOW WORK
Answer» ANSWER: sorry I don't know Step-by-step explanation: plz FOLLOW me mark me brainliest l

10.

30 POINTS AND BRAINLIEST ANSWeR TO DO ALL OF THIS AND SHOW WORK

Answer»

ANSWER:

sorry I don't know

Step-by-step explanation:

plz FOLLOW me

mark me brainliest l

Discussion

11.	Kopinal fluid which protect the bram trom mestankab he caloured flowering plant (BB) was crossesb) 4lowering plant (BB) was crossed with white coloured flowering plantWhat will be the colour of flowers in F1 generation ?percentage of white flowered plants will be in 12 generation through self-pollinationof plants. Explain with diagram.
Answer» ANSWER: PLEASE ASK your QUESTION PROPERLY

11.

Kopinal fluid which protect the bram trom mestankab he caloured flowering plant (BB) was crossesb) 4lowering plant (BB) was crossed with white coloured flowering plantWhat will be the colour of flowers in F1 generation ?percentage of white flowered plants will be in 12 generation through self-pollinationof plants. Explain with diagram.

Answer»

ANSWER:

PLEASE ASK your QUESTION PROPERLY

Discussion

12.	The size of a box is 2.1 centimetre find it probability. And area Find them.
Answer» ANSWER: bdhdjdhdnkdj Step-by-step EXPLANATION: jdjdjffbjeows

12.

The size of a box is 2.1 centimetre find it probability. And area Find them.

Answer»

ANSWER:

bdhdjdhdnkdj

Step-by-step EXPLANATION:

jdjdjffbjeows

Discussion

13.	Expand the following using suitable identity: 36x^2-49
Answer» ANSWER: IDENTITY :- a^2-b^2=(a+b)(a-b) So this is the answer......

13.

Expand the following using suitable identity: 36x^2-49

Answer»

ANSWER:

IDENTITY :- a^2-b^2=(a+b)(a-b)

So this is the answer......

Discussion

14.	A hexagonal prism has 8 faces, TRUE or FALSE
Answer» Answer: Hey Step-by-step explanation: TRUE. .......... Hello GOOD morning Have a GREAT DAY:)

14.

A hexagonal prism has 8 faces, TRUE or FALSE

Answer»

Answer:

Hey

Step-by-step explanation:

TRUE. ..........

Hello GOOD morning

Have a GREAT DAY:)

Discussion

15.	Find the value of the polynomial 4x²—5x—7x at x=4
Answer» Step-by-step EXPLANATION: $4 \times {4}^{2} - 4 \times 5 - 7 \times 4 \\ \\ = 4 \times 16 - 20 - 28 \\ \\ = 64 - 48 \\ \\ = 16$

15.

Find the value of the polynomial 4x²—5x—7x at x=4

Answer»

Step-by-step EXPLANATION:

$4 \times {4}^{2} - 4 \times 5 - 7 \times 4 \\ \\ = 4 \times 16 - 20 - 28 \\ \\ = 64 - 48 \\ \\ = 16$

Discussion

16.	Find loss if cost price is equal to rupees 600 selling price is rupess 630
Answer» ANSWER: The answer is: Step-by-step explanation: solution: CP = Rs.600 SP = Rs.630 LOSS =? We KNOW, ∴ Loss = CP - SP or; Loss = 600 - 630 ∴ Loss = Rs. 30

16.

Find loss if cost price is equal to rupees 600 selling price is rupess 630

Answer»

ANSWER:

The answer is:

Step-by-step explanation:

solution:

CP = Rs.600

SP = Rs.630

LOSS =?

We KNOW,

∴ Loss = CP - SP

or; Loss = 600 - 630

∴ Loss = Rs. 30

Discussion

17.	"एक रेलगाड़ी की चाल 80 किमी प्रति घण्टा है तो रेलगाड़ी द्वारा एक मिनट में तय की दूरीगणना कीजिए।
Answer» ANSWER: Speed = DISTANCE/ time 80= d/1 80×1=d D=80km Step-by-step explanation: PLZ..................MARK it as BRAINLIEST Be happy always

17.

"एक रेलगाड़ी की चाल 80 किमी प्रति घण्टा है तो रेलगाड़ी द्वारा एक मिनट में तय की दूरीगणना कीजिए।

Answer»

ANSWER:

Speed = DISTANCE/ time

80= d/1

80×1=d

D=80km

Step-by-step explanation:

PLZ..................MARK it as BRAINLIEST

Be happy always

Discussion

18.	13)Find zeroes of the polynomial P(x) = x2-25
Answer» ANSWER: -1,1, Step-by-step EXPLANATION:

18.

13)Find zeroes of the polynomial P(x) = x2-25

Answer»

ANSWER:

-1,1,

Step-by-step EXPLANATION:

Discussion

19.	एक रेलगाड़ी की चाल 80 किमी प्रति घण्टा है तो रेलगाड़ी द्वारा एक मिनट में तय की दरीगणना कीजिए।
Answer» 1HOUR() 60KM so 1minutes...8M

Discussion

20.	Evaluate :343 power-1/3
Answer» ANSWER: (7)3 = 343 as 7 × 7 × 7 = 343

20.

Evaluate :343 power-1/3

Answer»

ANSWER:

(7)3 = 343 as 7 × 7 × 7 = 343

Discussion

21.	The base angles of an isosceles trapezium are equal ,TRUE or FALSE
Answer» ANSWER: yes it is true okay BYE SEE you tomorrow PLEASE mark as brainlist

21.

The base angles of an isosceles trapezium are equal ,TRUE or FALSE

Answer»

ANSWER:

yes it is true okay BYE SEE you tomorrow PLEASE mark as brainlist

Discussion

22.	Ainsley has decided to begin a 5-day sit-up challenge where she plans to increase the number of sit-ups completed each consecutive day by the same amount to gradually build up her core muscle strength.After talking with a friend who already began the challenge, she's aware that she needs to complete 20 sit-ups on Day 1 of the challenge and will complete 36 sit-ups on the last day, Day 5.
Answer» Step-by-step explanation: this progression is an EXAMPLE of an AP given a=20, l=56, n=5 so, $l = a + (n - 1)d$ where d is the increase in no. of Sit UPS per day so, $56 = 20 + (5 - 1)d$ or $36 = 4d$ or $d = 9$ so, common DIFF =d=9 no. of sit-up on day 2 $a + (n - 1)d = 20 + (2 - 1)9$ $= 20 + 9 = 29$ so, no. of sit-up on day 15=20+(15-1)9 =20+126=146 sorry I could not give you the third answer. actually, the pic is BLURRED. and so, it could not be understood by me. please mark me as the brainliest

22.

Ainsley has decided to begin a 5-day sit-up challenge where she plans to increase the number of sit-ups completed each consecutive day by the same amount to gradually build up her core muscle strength.After talking with a friend who already began the challenge, she's aware that she needs to complete 20 sit-ups on Day 1 of the challenge and will complete 36 sit-ups on the last day, Day 5.

Answer»

Step-by-step explanation:

this progression is an EXAMPLE of an AP

given a=20, l=56, n=5

so,

$l = a + (n - 1)d$

where d is the increase in no. of Sit UPS per day

so,

$56 = 20 + (5 - 1)d$

or

$36 = 4d$

or

$d = 9$

so, common DIFF =d=9

no. of sit-up on day 2

$a + (n - 1)d = 20 + (2 - 1)9$

$= 20 + 9 = 29$

so, no. of sit-up on day 15=20+(15-1)9

=20+126=146

sorry I could not give you the third answer. actually, the pic is BLURRED. and so, it could not be understood by me.

please mark me as the brainliest

Discussion

23.	rohans mother is 26 years older than him. the product of their ages after 3 years will be 360years. we need to find rohans present age
Answer» Answer: X2+32x-273 Step-by-step explanation: Rohan age =x,her MOTHER age x+26,after THREE years rohan age =x+3,after three years rohan mother age x+26+3=x+29,product is EQUAL to 360, x+3*x+29= x(x+29)+3(x+29)=x2+32x+87 , x2+32x+87=360x2+32x-273=0 , from the roots we can find x rohans presents age

23.

rohans mother is 26 years older than him. the product of their ages after 3 years will be 360years. we need to find rohans present age

Answer»

Answer:

X2+32x-273

Step-by-step explanation:

Rohan age =x,her MOTHER age x+26,after THREE years rohan age =x+3,after three years rohan mother age x+26+3=x+29,product is EQUAL to 360, x+3*x+29= x(x+29)+3(x+29)=x2+32x+87 , x2+32x+87=360x2+32x-273=0 , from the roots we can find x rohans presents age

Discussion

24.	if a equal to root 10 + 5 by root 10 minus b is equal to root 3 minus root 3 + root a minus root b minus 2 root a b is equal to zero
Answer» Answer: KIS kis KE BOARD ke exam hai Step-by-step explanation: mark this as a brainlist

24.

if a equal to root 10 + 5 by root 10 minus b is equal to root 3 minus root 3 + root a minus root b minus 2 root a b is equal to zero

Answer»

Answer:

KIS kis KE BOARD ke exam hai

Step-by-step explanation:

mark this as a brainlist

Discussion

25.	The hight of cone is 16cm and the base radius is 12cm.Find CSA and volume of cone.
Answer» Answer: HEIGHT (H)=16CM RADIUS (R)=12cm now, 1/3πr2h 1/3×22/7(12×12)16 22/7×12×6 22/7×72 1584/7 226.285714

25.

The hight of cone is 16cm and the base radius is 12cm.Find CSA and volume of cone.

Answer»

Answer:

HEIGHT (H)=16CM

RADIUS (R)=12cm

now,

1/3πr2h

1/3×22/7(12×12)16

22/7×12×6

22/7×72

1584/7

226.285714

Discussion

26.	Prove this trignometric identity
Answer» ANSWER: your ANS.. SHOUD be there

26.

Prove this trignometric identity

Answer»

ANSWER:

your ANS.. SHOUD be there

Discussion

27.	o is the centre of the circle , angle acf = 30 degree , dec = 50 degree and cab = 20 degree and dbc = x degree. then find angle abd , angle bod and x
Answer» ANSWER: there is a flaw in the question, DC is not equal to BC and if it is, then the problem can't be SOLVED. please MARK me as the brainliest

27.

o is the centre of the circle , angle acf = 30 degree , dec = 50 degree and cab = 20 degree and dbc = x degree. then find angle abd , angle bod and x

Answer»

ANSWER:

there is a flaw in the question,

DC is not equal to BC and if it is, then the problem can't be SOLVED.

please MARK me as the brainliest

Discussion

28.	Expand the following using suitable identity: (b-7)^2
Answer» ANSWER: b $b {}^{2} + 49 - 2 \times 7b \\ b {}^{2} + 49 - 14b$ Step-by-step EXPLANATION: MARK as BRAINLIEST answer

28.

Expand the following using suitable identity: (b-7)^2

Answer»

ANSWER:

b

$b {}^{2} + 49 - 2 \times 7b \\ b {}^{2} + 49 - 14b$

Step-by-step EXPLANATION:

MARK as BRAINLIEST answer

Discussion

29.	Find the product of roots for 5x^2-6x+1
Answer» ANSWER: PRODUCTS of ROOTS is c/a so, 1/5

29.

Find the product of roots for 5x^2-6x+1

Answer»

ANSWER:

PRODUCTS of ROOTS is c/a

so,

1/5

Discussion

30.	How do you find the distance between points that are aligned horizontally ?vertically?
Answer» ANSWER:√(x2-x1)2+(y2-y1) Step-by-step EXPLANATION:

30.

How do you find the distance between points that are aligned horizontally ?vertically?

Answer»

ANSWER:√(x2-x1)2+(y2-y1)

Step-by-step EXPLANATION:

Discussion

31.	k ke kis Man ke liye Rakhik samikaran yugm 2x-y-3=0, 2kx + 7y - 5=0 Ka ekmatra Hal X barabar 1, Y barabar 1 - hai
Answer» Step-by-step EXPLANATION: hinxsocsksindi gggghjjigjjgjgjgjghghghgggggg

31.

k ke kis Man ke liye Rakhik samikaran yugm 2x-y-3=0, 2kx + 7y - 5=0 Ka ekmatra Hal X barabar 1, Y barabar 1 - hai

Answer»

Step-by-step EXPLANATION:

hinxsocsksindi gggghjjigjjgjgjgjghghghgggggg

Discussion

32.	Find angle abd , angle bod and angle x
Answer» ANSWER: ANGLE ABD = 40° angle BOD =100°

32.

Find angle abd , angle bod and angle x

Answer»

ANSWER:

ANGLE ABD = 40°

angle BOD =100°

Discussion

33.	if two points are not aligned horizontally or vertically how would you determine the distance between them
Answer» ANSWER:it's not possible Step-by-step EXPLANATION:

33.

if two points are not aligned horizontally or vertically how would you determine the distance between them

Answer»

ANSWER:it's not possible

Step-by-step EXPLANATION:

Discussion

34.	Find a quadratic polyonimal if the zeros of it are 2 and -1/3 respectively
Answer» $\huge\underline \mathfrak \blue{Answer}$ I hope it will helps u.... PLZ MARK. as brainlist....☺️☺️☺️

34.

Find a quadratic polyonimal if the zeros of it are 2 and -1/3 respectively

Answer»

$\huge\underline \mathfrak \blue{Answer}$

I hope it will helps u....

PLZ MARK. as brainlist....☺️☺️☺️

Discussion

35.	Find each angle of a parallelogram if two consective angles are in the ratio 1:3
Answer» Answer: SUM of adjacent ANGLE in a parallelogram = 180 Let ONE angle be 3x Let another angle be 1x 1x+3x=180 4x=180 x=180/4 x=45 1x= 145= 45 3x=345=135

35.

Find each angle of a parallelogram if two consective angles are in the ratio 1:3

Answer»

Answer:

SUM of adjacent ANGLE in a parallelogram = 180

Let ONE angle be 3x

Let another angle be 1x

1x+3x=180

4x=180

x=180/4

x=45

1x= 1*45= 45

3x=3*45=135

Discussion

36.	In a digital display which digit can display all the 10 digits from 0 to 9
Answer» Step-by-step explanation: 8 MARK as BRAINLIEST ANSWER

36.

In a digital display which digit can display all the 10 digits from 0 to 9

Answer»

Step-by-step explanation:

8

MARK as BRAINLIEST ANSWER

Discussion

37.	3. The perimeter of a square garden is 48m. A small flowergarden. What is the area of the garden that is not covered by the flower bed? What fraof the garden is covered by flower bed? Find the ratio of the area covered by the flothe remaining area.inntonales Find the to
Answer» ANSWER: I THINK Your answer is not FULLY CORRECT

37.

3. The perimeter of a square garden is 48m. A small flowergarden. What is the area of the garden that is not covered by the flower bed? What fraof the garden is covered by flower bed? Find the ratio of the area covered by the flothe remaining area.inntonales Find the to

Answer»

ANSWER:

I THINK Your answer is not FULLY CORRECT

Discussion

38.	Every square is a rhombus " TRUE or FALSE
Answer» ANSWER: TRUE As both the of there PROPERTIES MATCH

38.

Every square is a rhombus " TRUE or FALSE

Answer»

ANSWER:

TRUE

As both the of there PROPERTIES MATCH

Discussion

39.	414. If n[p(A)]+n[P(B)]= 1025, n(A) < n(B), then n(A) =1) 12) 23) 04) 4
Answer» We have: n(P(A))+n(P(B) = 1025 Where, n(A) < n(B) We have to find the value of n(A) = ? Solution: ∴ n(P(A))+n(P(B) = 1025 n(A) = 2 Beacuse, it is a number of FUNCTIONS in the sunset. ∴ The value of n(A) = 2 Thus, the value of n(A) is "equal to 2". Thus, the REQUIRED "OPTION 2) 2" is CORRECT.

39.

414. If n[p(A)]+n[P(B)]= 1025, n(A) < n(B), then n(A) =1) 12) 23) 04) 4

Answer»

We have:

n(P(A))+n(P(B) = 1025

Where, n(A) < n(B)

We have to find the value of n(A) = ?

Solution:

∴ n(P(A))+n(P(B) = 1025

n(A) = 2

Beacuse, it is a number of FUNCTIONS in the sunset.

∴ The value of n(A) = 2

Thus, the value of n(A) is "equal to 2".

Thus, the REQUIRED "OPTION 2) 2" is CORRECT.

Discussion

40.	Which of the following best describes the ordered pairs listed below?(-2, -6), (2, -14), (-2, -24), (9, -28)A) function only B) relation only C) neither a relation nor a function D) both a relation and a function
Answer» ANSWER: ........................d

40.

Which of the following best describes the ordered pairs listed below?(-2, -6), (2, -14), (-2, -24), (9, -28)A) function only B) relation only C) neither a relation nor a function D) both a relation and a function

Answer»

ANSWER:

........................d

Discussion

41.	If the direction Cosine of the vector are 1/5, 3/5 and p find p
Answer» ANSWER: for COSINE VECTOR SUM of all is ONE 1/5+3/5+p=1then p=1/5

41.

If the direction Cosine of the vector are 1/5, 3/5 and p find p

Answer»

ANSWER:

for COSINE VECTOR SUM of all is ONE 1/5+3/5+p=1then p=1/5

Discussion

42.	Which piac3. Express the following in kma. 10 light minutes b. 10 light daysc. 10 light years.with method
Answer» ANSWER: jejsysjge ekjsbeje khsbvsjus khsbgd kuxhvd jzigsb

42.

Which piac3. Express the following in kma. 10 light minutes b. 10 light daysc. 10 light years.with method

Answer»

ANSWER:

jejsysjge ekjsbeje khsbvsjus khsbgd kuxhvd jzigsb

Discussion

43.	1/tan A+cotA=sinA+cosA
Answer» *1/tanA+1/cotA* *1/tanA+1/cotA1/sinA/cosA+1/cosA/sinA* *1/tanA+1/cotA1/sinA/cosA+1/cosA/sinA1/sin²A+cos²A/SinAXcosA* *1/tanA+1/cotA1/sinA/cosA+1/cosA/sinA1/sin²A+cos²A/SinAXcosA1/1/SinAxcosA* *1/tanA+1/cotA1/sinA/cosA+1/cosA/sinA1/sin²A+cos²A/SinAXcosA1/1/SinAxcosAsinAcosA*

43.

1/tan A+cotA=sinA+cosA

Answer»

1/tanA+1/cotA

1/tanA+1/cotA1/sinA/cosA+1/cosA/sinA

1/tanA+1/cotA1/sinA/cosA+1/cosA/sinA1/sin²A+cos²A/SinAXcosA

1/tanA+1/cotA1/sinA/cosA+1/cosA/sinA1/sin²A+cos²A/SinAXcosA1/1/SinAxcosA

1/tanA+1/cotA1/sinA/cosA+1/cosA/sinA1/sin²A+cos²A/SinAXcosA1/1/SinAxcosAsinAcosA

Discussion

44.	Classify the following into scalar and vector quantity electric field , Temperature, year flow and electric potential
Answer» VECTOR quantities are ELECTRIC field scalar quantities are temperature,electric POTENTIAL,year flow.

44.

Classify the following into scalar and vector quantity electric field , Temperature, year flow and electric potential

Answer»

VECTOR quantities are ELECTRIC field

scalar quantities are temperature,electric POTENTIAL,year flow.

Discussion

45.	If x + 1/x = 5 what will x² + 1/x² equal to
Answer» x+1/x=5 squaring on both sides x^2+1/ x^2 +2×x^2×1/x^2=25 x^2+1/x^2+2=25 x^2+1/x^2=23

45.

If x + 1/x = 5 what will x² + 1/x² equal to

Answer»

x+1/x=5

squaring on both sides

x^2+1/ x^2 +2×x^2×1/x^2=25

x^2+1/x^2+2=25

x^2+1/x^2=23

Discussion

46.	4) What will you do to help following persons.b) Your neighbour's son is doing illegal sale of software,
Answer» Answer: First i will bring to the NOTICE of the authorities then i will TELL his parents then i will try ti change his LIFE... hope it helps mate PLS mark as brainliest

46.

4) What will you do to help following persons.b) Your neighbour's son is doing illegal sale of software,

Answer»

Answer:

First i will bring to the NOTICE of the authorities

then i will TELL his parents

then i will try ti change his LIFE...

hope it helps mate

PLS mark as brainliest

Discussion

47.	construct a triangle with base of length 7.5 CM the difference of other two side is 2.5 cm and on.e base angle of 45°
Answer» ANSWER: SORRY I can't help you this time I have to draw this sorry for that

47.

construct a triangle with base of length 7.5 CM the difference of other two side is 2.5 cm and on.e base angle of 45°

Answer»

ANSWER:

SORRY I can't help you this time

I have to draw this

sorry for that

Discussion

48.	10. B can do a piece of work in 6 hours, B and C can do it in 4 hoursand A, B and C in 24 hours. In how many hours can A and B do it?
Answer» Answer: Precisely 3 hours, 19 minutes, 12 seconds. Step-by-step explanation: I NEVER liked questions like these. INVERSE PROPORTIONS work rate, w is INVERSELY proportional to time, t meaning w = K / t where K is a constant representing the amount of work Now B is a dude whose work rate is well…B, and the time he TAKES to complete K is 6 hours therefore, B = K / 6 In the second statement, B and C can do the work in 4 hours. This means that the combined work rate of B and C is B + C = K / 4 now since we know the work rate of B, we have to find that of C (K / 6) + C = (K / 4) C = (K / 4) - (K /6) C = K / 12 C’s work rate is K/12 meaning it would take C 12 hours to complete the work alone In the third statement, A, B, and C can complete this work in 2.6 hours. As usual, A + B + C = K / 2.6 Now the mystery man is A, what is his work rate? A + (K/6) + (K/12)= (K/2.6) A = (K/2.6) - (K/6) - (K/12) A = K/7.43 So it takes A, 7.43 hrs to complete the work alone. Now the question is to find out how LONG A and B would take to complete the work In order to find this, we have to combine their work rates A + B = ? (K/7.43) + (K/6) = K/3.32 So when A and B work together, it would take 3.32 hours to finish Precisely 3 hours, 19 minutes, 12 seconds. Unless a meteor crashes

48.

10. B can do a piece of work in 6 hours, B and C can do it in 4 hoursand A, B and C in 24 hours. In how many hours can A and B do it?

Answer»

Answer:

Precisely 3 hours, 19 minutes, 12 seconds.

Step-by-step explanation:

I NEVER liked questions like these. INVERSE PROPORTIONS

work rate, w is INVERSELY proportional to time, t

meaning w = K / t where K is a constant representing the amount of work

Now B is a dude whose work rate is well…B, and the time he TAKES to complete K is 6 hours

therefore, B = K / 6

In the second statement, B and C can do the work in 4 hours. This means that the combined work rate of B and C is

B + C = K / 4

now since we know the work rate of B, we have to find that of C

(K / 6) + C = (K / 4)

C = (K / 4) - (K /6)

C = K / 12

C’s work rate is K/12 meaning it would take C 12 hours to complete the work alone

In the third statement, A, B, and C can complete this work in 2.6 hours. As usual,

A + B + C = K / 2.6

Now the mystery man is A, what is his work rate?

A + (K/6) + (K/12)= (K/2.6)

A = (K/2.6) - (K/6) - (K/12)

A = K/7.43

So it takes A, 7.43 hrs to complete the work alone.

Now the question is to find out how LONG A and B would take to complete the work

In order to find this, we have to combine their work rates

A + B = ?

(K/7.43) + (K/6) = K/3.32

So when A and B work together, it would take 3.32 hours to finish

Precisely 3 hours, 19 minutes, 12 seconds.

Unless a meteor crashes

Discussion

49.	Findtheanswerofx + any- ay + 2x + 5 = 0? So in equation methodwhat is the value of Miy)
Answer» ANSWER: /9/96535+665/6'66""6'6'6'6

49.

Findtheanswerofx + any- ay + 2x + 5 = 0? So in equation methodwhat is the value of Miy)

Answer»

ANSWER:

/9/96535+665/6'66""6'6'6'6

Discussion

50.	Solve the Puzzle.......
Answer» ANSWER: the answer for your QUESTION is 1.5,12.5,13.5,3.5

50.

Solve the Puzzle.......

Answer»

ANSWER:

the answer for your QUESTION is 1.5,12.5,13.5,3.5

Discussion

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