332354 + Interview Questions in Secondary School in Math

1.	8by 5 +0= 0+8by5 which property
Answer» ANSWER: COMMUTATIVE PROPERTY

1.

8by 5 +0= 0+8by5 which property

Answer»

ANSWER:

COMMUTATIVE PROPERTY

Discussion

2.	Mary wrote all the integers from 1 to 19.How many digits did she write?Not numbers, digits.
Answer» There are 29 digits HOPE it HELPS Please MAKE it the BRANLIEST Answer

2.

Mary wrote all the integers from 1 to 19.How many digits did she write?Not numbers, digits.

Answer»

There are 29 digits

HOPE it HELPS

Please MAKE it the BRANLIEST Answer

Discussion

3.	How to represent 31/-6 on a number line
Answer» Answer: 31/-6 or - 31/6 (it can be WRITTEN) $\frac{ - 28}{6} \: \: \: \: \: \frac{ - 29}{6 } \: \: \: \: \: \frac{ - 30}{6} \: \: \: \: \: \| \frac{ - 31}{6} \| \: \: \: \: \: - \frac{ - 32}{6} \\$

3.

How to represent 31/-6 on a number line

Answer»

Answer:

31/-6 or - 31/6 (it can be WRITTEN)

$\frac{ - 28}{6} \: \: \: \: \: \frac{ - 29}{6 } \: \: \: \: \: \frac{ - 30}{6} \: \: \: \: \: | \frac{ - 31}{6} | \: \: \: \: \: - \frac{ - 32}{6} \\$

Discussion

4.	A man says "I thinking of a number . When I divide it by 3 and then add 5, my answer is twice the number I thought of ." Find the number
Answer» Let the no. be x. according to the question, x/3+5=2x 5=2x-x/3 5=6x-x/3 (LCM) 5=5x/3 15=5x Therefore, x=15/5 x=3 You may ALSO verify your answer 3÷3= 1 and 1 +5 =6 (TWICE the no. 3) Hope it helps Please MAKE it the Branliest Answer

4.

A man says "I thinking of a number . When I divide it by 3 and then add 5, my answer is twice the number I thought of ." Find the number

Answer»

Let the no. be x.

according to the question,

x/3+5=2x

5=2x-x/3

5=6x-x/3 (LCM)

5=5x/3

15=5x

Therefore,

x=15/5

x=3

You may ALSO verify your answer

3÷3= 1

and 1 +5 =6 (TWICE the no. 3)

Hope it helps

Please MAKE it the Branliest Answer

Discussion

5.	The area of a rectangular park is 3500 m2. If it width is 50 m, then find the cost of its fencing at the ratr of 100 ruppies per meter
Answer» Answer: The cost of fencing the park = 24000 RUPEE Step-by-step explanation: We have given that Area of park = 3500 m^2 Width of park = 50 m we need to find the value of LENGTH because the fencing will be DONE on length and width of park so we know Area of RECTANGLE = length x width 3500 = Length x 50 calculating this we will get Length = 70 m now for fencing it we need to calculate the PERIMETER So PERIMETER OF RECTANGLE = 2 x ( LENGTH + WIDTH) Perimeter = 2 x (70 + 50) = 240 m as given fencing 1 meter it cost = 100 rupee so fencing 240 m it will cost = 100 x 240 = 24000 rupee *if you like my ans please THANKS me :-)

5.

The area of a rectangular park is 3500 m2. If it width is 50 m, then find the cost of its fencing at the ratr of 100 ruppies per meter

Answer»

Answer:

The cost of fencing the park = 24000 RUPEE

Step-by-step explanation:

We have given that Area of park = 3500 m^2

Width of park = 50 m

we need to find the value of LENGTH because the fencing will be DONE on length and width of park

so we know Area of RECTANGLE = length x width

3500 = Length x 50

calculating this we will get Length = 70 m

now for fencing it we need to calculate the PERIMETER

So PERIMETER OF RECTANGLE = 2 x ( LENGTH + WIDTH)

Perimeter = 2 x (70 + 50)

= 240 m

as given fencing 1 meter it cost = 100 rupee

so fencing 240 m it will cost = 100 x 240 = 24000 rupee

*if you like my ans please THANKS me :-)

Discussion

6.	What must be added to 56784698 to make 6824572
Answer» Answer: 49960126 mark me BRAINLIEST ,

6.

What must be added to 56784698 to make 6824572

Answer»

Answer:

49960126

mark me BRAINLIEST

,

Discussion

7.	Withoust actually performing the long division state whether the 15/50 will have a terminating decimal expansion or non terminating repating decimal expansion
Answer» Answer: 1) convert the fraction in its lowest term 2) do prime factorization of the denominator 3) if the factors are other than 2 or 5, then it would be a non terminating DECIMAL Lowest term of 15/50= 3/10 Prime factorization of 10= 2×5 As the factors are only 2 or 5, it is a terminating decimal. Hope you got your answer. PLEASE MARK MY ANSWER AS BRAINLIEST.

7.

Withoust actually performing the long division state whether the 15/50 will have a terminating decimal expansion or non terminating repating decimal expansion

Answer»

Answer:

1) convert the fraction in its lowest term

2) do prime factorization of the denominator

3) if the factors are other than 2 or 5, then it would be a non terminating DECIMAL

Lowest term of 15/50= 3/10

Prime factorization of 10= 2×5

As the factors are only 2 or 5, it is a terminating decimal.

Hope you got your answer.

PLEASE MARK MY ANSWER AS BRAINLIEST.

Discussion

8.	If the volume of cube is 343cm cube find its total surface area and lateral surface area
Answer» Step-by-step explanation: Volume of a CUBE = side³ 343cm³=side³ $\sqrt[3]{343} = <klux>SIDE</klux>$ 7cm=side Total surface area formula = side ×6 7cm×6 = 42cm Lateral surface area= side × 4 7cm×4=28cm Hope it helps you! Mark me as BRAINLIEST.

8.

If the volume of cube is 343cm cube find its total surface area and lateral surface area

Answer»

Step-by-step explanation:

Volume of a CUBE = side³

343cm³=side³

$\sqrt[3]{343} = <klux>SIDE</klux>$

7cm=side

Total surface area formula = side ×6

7cm×6 = 42cm

Lateral surface area= side × 4

7cm×4=28cm

Hope it helps you!

Mark me as BRAINLIEST.

Discussion

9.	Three equilant rational number of -2/6
Answer» ANSWER: hello mate Step-by-step explanation: the three EQUIVALENT rational NUMBERS of -2/6 are: i) -2/6 = -22/62 = -4/12 ii) -2/6 = -23/63 = -6/18 iii) -2/6 = -24/64 = -8/24 hope this answer will be helpful for u plzz mark it as brainliest answer

9.

Three equilant rational number of -2/6

Answer»

ANSWER:

hello mate

Step-by-step explanation:

the three EQUIVALENT rational NUMBERS of -2/6 are:

i) -2/6 = -2*2/6*2 = -4/12

ii) -2/6 = -2*3/6*3 = -6/18

iii) -2/6 = -2*4/6*4 = -8/24

hope this answer will be helpful for u

plzz mark it as brainliest answer

Discussion

10.	Write all the integers lying between _13 and_4
Answer» Answer: -12,-11,-10,-9,-8,-7,-6,-5

10.

Write all the integers lying between _13 and_4

Answer»

Answer:

-12,-11,-10,-9,-8,-7,-6,-5

Discussion

11.	Find the some of -6/7plus-5/6 plus -4/9plus -15/7
Answer» ANSWER: -6/7-5/6-4/9-15/7 -539/126

11.

Find the some of -6/7plus-5/6 plus -4/9plus -15/7

Answer»

ANSWER:

-6/7-5/6-4/9-15/7

-539/126

Discussion

12.	Wt are rational expressions, give examples
Answer» ANSWER: A rational expression is nothing more than a FRACTION in which the numerator and/or the denominator are polynomials. Here are some examples of rational expressions. The last ONE may look a little STRANGE since it is more commonly written 4x2+6x−10 4 x 2 + 6 x − 10 . Step-by-step EXPLANATION: so yeah

12.

Wt are rational expressions, give examples

Answer»

ANSWER:

A rational expression is nothing more than a FRACTION in which the numerator and/or the denominator are polynomials. Here are some examples of rational expressions. The last ONE may look a little STRANGE since it is more commonly written 4x2+6x−10 4 x 2 + 6 x − 10 .

Step-by-step EXPLANATION: so yeah

Discussion

13.	1. A bag contains 3 red balls and 5 black balls. A ball is drawn at random fromWhat is the probability that the ball drawn is (i) red (ii) not red2.A box contains 5 red marbles , & white marbles and 4 green marbles. One marble is taken out of the box at random. What is the probability that the marble take out will be(i) red? (ii) white? (iii) not green?3. A piggy bank contain hundred 50p coins , fifty \| Re coins , twenty 2 Rs coins and ten 5 Rs coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down , What is the probability that thecoin (i) will be a 50 p coin? (ii) will not be a 5 Rs coin?4. Gopi buys a fish from a shop for his aquarium. The shopkeeper takes out one fish at random from a tank containing 5 male fish and 8 female fish What is the probability that the fish taken out is a male fish?5. 12 defective pens are accidently mixed with 132 good ones. It is not possible to just look at a pen and tell whether or not it is defective One pen is taken out at random from this lot Determine the probability that the pen taken out is a good one.6. A lot of 20 bulbs contain 4 defective ones One bulb is drawn at random from the lotWhat is the probability that the bulb is defective?7. Suppose the bulb is drawn at random (from 20 bulbs which contains 4 defective ones) isnot defective and is not replaced Now one bulb is drawn from the rest. What is the probability that this bulb is not defective?8. A box contains 90 diss which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two digit number (ii) a perfectsquare number (iii) a number divisible by 5. 9. In a musical chair game, the person playing the music has been advised to stop playingthe music at any time within 2 minutes after she starts playing What is the probability that the music will stop within the first half-minute after starting?10.A) What is the probability that an ordinary year has 53 Sundays?B) What is the probability that a leap year has 53 Sundays?
Answer» Answer: 1- 1/8 2 - 1/13 Step-by-step EXPLANATION: HELLO !!!

13.

1. A bag contains 3 red balls and 5 black balls. A ball is drawn at random fromWhat is the probability that the ball drawn is (i) red (ii) not red2.A box contains 5 red marbles , & white marbles and 4 green marbles. One marble is taken out of the box at random. What is the probability that the marble take out will be(i) red? (ii) white? (iii) not green?3. A piggy bank contain hundred 50p coins , fifty | Re coins , twenty 2 Rs coins and ten 5 Rs coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down , What is the probability that thecoin (i) will be a 50 p coin? (ii) will not be a 5 Rs coin?4. Gopi buys a fish from a shop for his aquarium. The shopkeeper takes out one fish at random from a tank containing 5 male fish and 8 female fish What is the probability that the fish taken out is a male fish?5. 12 defective pens are accidently mixed with 132 good ones. It is not possible to just look at a pen and tell whether or not it is defective One pen is taken out at random from this lot Determine the probability that the pen taken out is a good one.6. A lot of 20 bulbs contain 4 defective ones One bulb is drawn at random from the lotWhat is the probability that the bulb is defective?7. Suppose the bulb is drawn at random (from 20 bulbs which contains 4 defective ones) isnot defective and is not replaced Now one bulb is drawn from the rest. What is the probability that this bulb is not defective?8. A box contains 90 diss which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two digit number (ii) a perfectsquare number (iii) a number divisible by 5. 9. In a musical chair game, the person playing the music has been advised to stop playingthe music at any time within 2 minutes after she starts playing What is the probability that the music will stop within the first half-minute after starting?10.A) What is the probability that an ordinary year has 53 Sundays?B) What is the probability that a leap year has 53 Sundays?

Answer»

Answer:

1- 1/8

2 - 1/13

Step-by-step EXPLANATION:

HELLO !!!

Discussion

14.	Find three rational no.betweem 1.4 and1.5
Answer» Answer: 141/100 , 142/100,143/100

14.

Find three rational no.betweem 1.4 and1.5

Answer»

Answer:

141/100 , 142/100,143/100

Discussion

15.	Factorise y^3-64 please help
Answer» Step-by-step explanation: y 3 − 4 3 = ( y − 4 ) ( y 2 + 4 y + 16 ) Explanation: y 3 − 64 is a difference of CUBES, a 3 – b 3 = ( a – b ) ( a 2 + a b + b 2 ) , where a = y and b = 4 . Rewrite the EQUATION. ( y ) 3 − ( 4 ) 3 = ( y − 4 ) ( y 2 + ( y ⋅ 4 ) + 4 2 ) Simplify. y 3 − 4 3 = ( y − 4 ) ( y 2 + 4 y + 16 ) ANSWER link

15.

Factorise y^3-64 please help

Answer»

Step-by-step explanation:

y

3

−

4

3

=

(

y

−

4

)

(

y

2

+

4

y

+

16

)

Explanation:

y

3

−

64

is a difference of CUBES,

a

3

–

b

3

=

(

a

–

b

)

(

a

2

+

a

b

+

b

2

)

, where

a

=

y

and

b

=

4

.

Rewrite the EQUATION.

(

y

)

3

−

(

4

)

3

=

(

y

−

4

)

(

y

2

+

(

y

⋅

4

)

+

4

2

)

Simplify.

y

3

−

4

3

=

(

y

−

4

)

(

y

2

+

4

y

+

16

)

ANSWER link

Discussion

16.	Expansion: Using standard formulae, expand the following(i) (x+3)(x+5)(ii) (x-2y)(x-3y)
Answer» ANSWER: i)(X+3) (x+5)=4 ii)(x-2y)(x-3y)=2/5 Step-by-step EXPLANATION: i)x+3)( x +5)= 2x=3+5 2x=8 x=4 ii) (x-2y)(x-3y) 2x=5y x=2/5

16.

Expansion: Using standard formulae, expand the following(i) (x+3)(x+5)(ii) (x-2y)(x-3y)

Answer»

ANSWER:

i)(X+3) (x+5)=4

ii)(x-2y)(x-3y)=2/5

Step-by-step EXPLANATION:

i)x+3)( x +5)= 2x=3+5

2x=8

x=4

ii) (x-2y)(x-3y)

2x=5y

x=2/5

Discussion

17.	A man moves in such a way that he advances 20 steps and move back 3 steps every minute . After 15 minutes , how much steps he would advance ?
Answer» ANSWER: 255 STEPS this is it's answer

17.

A man moves in such a way that he advances 20 steps and move back 3 steps every minute . After 15 minutes , how much steps he would advance ?

Answer»

ANSWER:

255 STEPS this is it's answer

Discussion

18.	Taking in ascending order.- 1.23456 , 132456, 123546, 123564, 123654
Answer» ANSWER: 132456,123654,123564,123546,1.23456 is CORRECT answer

18.

Taking in ascending order.- 1.23456 , 132456, 123546, 123564, 123654

Answer»

ANSWER:

132456,123654,123564,123546,1.23456 is CORRECT answer

Discussion

19.	2m/5=1. linear equation
Answer» ANSWER: HEY mate here is your answer.... 2m = 5 m = 5/2 = 2.5 Hope it HELPS you....

19.

2m/5=1. linear equation

Answer»

ANSWER:

HEY mate here is your answer....

2m = 5

m = 5/2 = 2.5

Hope it HELPS you....

Discussion

20.	5. Verify that 1 ,1/2 and -2 are the zeros of the cubic polynomial2x^3 + x^2 – 5x +2.
Answer» Step-by-step EXPLANATION: all the values U given satisfies I HOPE u UNDERSTAND it

20.

5. Verify that 1 ,1/2 and -2 are the zeros of the cubic polynomial2x^3 + x^2 – 5x +2.

Answer»

Step-by-step EXPLANATION:

all

the

values

U given

satisfies

I HOPE u UNDERSTAND it

Discussion

21.	Free brainliest and 50 points just answer my question
Answer» ANSWER: $\textbf{Sorry for delay! Here is your answer}$ Step-by-step EXPLANATION: τнαทк yσυ ƒσr yσυr αττєทτiσท płεครε мคяк мε Ъяค¡หł¡εรт คหd ƒσłłσω мe

21.

Free brainliest and 50 points just answer my question

Answer»

ANSWER:

$\textbf{Sorry for delay! Here is your answer}$

Step-by-step EXPLANATION:

τнαทк yσυ ƒσr yσυr αττєทτiσท

płεครε мคяк мε Ъяค¡หł¡εรт คหd ƒσłłσω мe

Discussion

22.	(3,18,7)(28,71,35) (48,65,?) (60,108,95)
Answer» ANSWER: the CORRECT ANS is 9 of your PROBLEM .

22.

(3,18,7)(28,71,35) (48,65,?) (60,108,95)

Answer»

ANSWER:

the CORRECT ANS is 9 of your PROBLEM .

Discussion

23.	6a²-150b² factorise the following
Answer» ANSWER: HEY MATE. Here you GO with the answer

23.

6a²-150b² factorise the following

Answer»

ANSWER:

HEY MATE. Here you GO with the answer

Discussion

24.	Find three rational no.between -1 and 1/2
Answer» Answer: 0/1/2....................

24.

Find three rational no.between -1 and 1/2

Answer»

Answer:

0/1/2....................

Discussion

25.	A=(x/xbelona n 3
Answer» ANSWER: A={x/x€N and 3 It's roaster FORM, A={4,5,6,7} Hope it works.........................™✌️✌️

25.

A=(x/xbelona n 3

Answer»

ANSWER:

A={x/x€N and 3

It's roaster FORM,

A={4,5,6,7}

Hope it works.........................™✌️✌️

Discussion

26.	खाली महाराष्ट्रातील काही जिल्ह्यांची नावे लपलेली आहेत....बघा ओळखता येतात का ❓1) 2) ️‍♀️3) 4) Dha ❌5) ️ Ra6) 7) ❌8) D9) ‍♀️‍♀️10) 7️⃣ Aara11) gaon12) 13) ️ Chi 14) Ne15) ️16) Gon 17) Oor18) 1 1/219) ❌20) ⬆️ Dha
Answer» Answer: 16. GONDIYA 10. SATARA

26.

खाली महाराष्ट्रातील काही जिल्ह्यांची नावे लपलेली आहेत....बघा ओळखता येतात का ❓1) 2) ️‍♀️3) 4) Dha ❌5) ️ Ra6) 7) ❌8) D9) ‍♀️‍♀️10) 7️⃣ Aara11) gaon12) 13) ️ Chi 14) Ne15) ️16) Gon 17) Oor18) 1 1/219) ❌20) ⬆️ Dha

Answer»

Answer:

16. GONDIYA

10. SATARA

Discussion

27.	57+19=1612+13=0303+30=3051+24 = ?
Answer» Step-by-step EXPLANATION: this is WRONG QUESTION OK

27.

57+19=1612+13=0303+30=3051+24 = ?

Answer»

Step-by-step EXPLANATION:

this is WRONG QUESTION OK

Discussion

28.	3^99999999999999999 ×√99×π÷88 any legend who can answer
Answer» Let your answer be x. So possible VALUES of x are as follows:- x>0 x>1 x>2 Now I think you can find the value of your answer. Hope It helped you in some or the other way. Do FOLLOW me

28.

3^99999999999999999 ×√99×π÷88 any legend who can answer

Answer»

Let your answer be x.

So possible VALUES of x are as follows:-

x>0

x>1

x>2

Now I think you can find the value of your answer.

Hope It helped you in some or the other way.

Do FOLLOW me

Discussion

29.	X minus 8 equal to 17
Answer» ANSWER: x=17+8 x=25.....??....

29.

X minus 8 equal to 17

Answer»

ANSWER:

x=17+8

x=25.....??....

Discussion

30.	8x=15+3x.linear equation
Answer» *ANSWER* :- 8x - 3x = 15 => 5x = 25 => x = 3 *HOPE* IT *HELPS* ☺️ .....!! *THANKS* ..... *:-)* $\huge\red{Follow}$

30.

8x=15+3x.linear equation

Answer»

ANSWER :-

8x - 3x = 15

=> 5x = 25

=> x = 3

HOPE IT HELPS ☺️ .....!!

THANKS ..... :-)

$\huge\red{Follow}$

Discussion

31.	Two difference of an integer P and -8 is 3 .Find the value of P.
Answer» Answer: Hey MATE here is your answer..... P-(-8) = 3 P+8 = 3 P = 3-8 = -5 Hope it helps you....

31.

Two difference of an integer P and -8 is 3 .Find the value of P.

Answer»

Answer:

Hey MATE here is your answer.....

P-(-8) = 3

P+8 = 3

P = 3-8 = -5

Hope it helps you....

Discussion

32.	HWQues:of8-Classfindant .mean1-3the5 .distribution :5-7 7-92u9-
Answer» ANSWER: PLSS WRITE in PROPER why.

32.

HWQues:of8-Classfindant .mean1-3the5 .distribution :5-7 7-92u9-

Answer»

ANSWER:

PLSS WRITE in PROPER why.

Discussion

33.	What are the minimum and maximum temperatures in the house?
Answer» ANSWER: It DEPENDS on the SURROUNDINGS.

33.

What are the minimum and maximum temperatures in the house?

Answer»

ANSWER:

It DEPENDS on the SURROUNDINGS.

Discussion

34.	Find the shaded region....
Answer» Answer: 56 cm^2 Step-by-step explanation: √2 × side of SQUARE = 14 side = 14/√2 = 14/√2 * √2/√2 = 7√2 area of square= (7√2)^2 = 98 cm^2 diameter of circle = DIAGONAL of square 2R = 14 => r = 7 area of shaded region = 22/7 * 7^2 - 98 = 154 - 98 = 56 cm^2

34.

Find the shaded region....

Answer»

Answer:

56 cm^2

Step-by-step explanation:

√2 × side of SQUARE = 14

side = 14/√2 = 14/√2 * √2/√2 = 7√2

area of square= (7√2)^2 = 98 cm^2

diameter of circle = DIAGONAL of square

2R = 14 => r = 7

area of shaded region

= 22/7 * 7^2 - 98 = 154 - 98 = 56 cm^2

Discussion

35.	Please check the attachmentWhat is in the sixth box?
Answer» YES the ANSWER is 6 I GOT it after a BIT LATER

Discussion

36.	Solve alpha^2 beta+ alpha beta^2
Answer» Step-by-step EXPLANATION: ${ \alpha }^{2} \beta + \alpha { \beta }^{2} = \alpha \beta ( \alpha + \beta )$ where $\alpha \: \: and \: \beta \: \: are \: roots$ hope this will HELP U

36.

Solve alpha^2 beta+ alpha beta^2

Answer»

Step-by-step EXPLANATION:

${ \alpha }^{2} \beta + \alpha { \beta }^{2} = \alpha \beta ( \alpha + \beta )$

where

$\alpha \: \: and \: \beta \: \: are \: roots$

hope this will HELP U

Discussion

37.	*** 2 - 2 )х*ел + +- - - - 2
Answer» PLSS WRITE PROPER QUESTIONS

Discussion

38.	of the three consecutive natural numbers five times the smallest number is 20 more than three times of the greatest number find the third number
Answer» Answer: The third NUMBER is 15. Step-by-step explanation: Let the three consecutive natural numbers be x , x + 1 , x + 2 here x is SMALLEST number and x + 2 is the greatest number Condition given: 5x = 3(x + 2) + 20 5x = 3x + 6 + 20 5x - 3x = 26 2x = 26 x = 13 Therefore third number = x + 2 = 13 + 2 = 15 Hence the answer is 15. I HOPE IT WILL HELP YOU.

38.

of the three consecutive natural numbers five times the smallest number is 20 more than three times of the greatest number find the third number

Answer»

Answer:

The third NUMBER is 15.

Step-by-step explanation:

Let the three consecutive natural numbers be

x , x + 1 , x + 2

here x is SMALLEST number and

x + 2 is the greatest number

Condition given:

5x = 3(x + 2) + 20

5x = 3x + 6 + 20

5x - 3x = 26

2x = 26

x = 13

Therefore third number = x + 2 = 13 + 2 = 15

Hence the answer is 15.

I HOPE IT WILL HELP YOU.

Discussion

39.	Please answer fast guys the question in in the photo
Answer» ANSWER: PLEASE MARK this answer as BRAINLIEST answer ans is 10

39.

Please answer fast guys the question in in the photo

Answer»

ANSWER:

PLEASE MARK this answer as BRAINLIEST answer

ans is 10

Discussion

40.	The ratio of incomes of two persons is 5: 3 and that of their expenditures is 9: 5. If they save Rs. 2000 and Rs. 1500 respectively, their expenditure are?
Answer» Answer: let income of person be 5x and 3x and expenses be 9yand 5y 5x-9y=2000 3x-5y=1500 MULTIPLYING 1by 3 and second by 5 15x-27=6000 15x-25y=7500 SUBTRACTING 1 by 2 2Y =1500 y=750 ans= expenditure 6750and3750

40.

The ratio of incomes of two persons is 5: 3 and that of their expenditures is 9: 5. If they save Rs. 2000 and Rs. 1500 respectively, their expenditure are?

Answer»

Answer:

let income of person be 5x and 3x

and expenses be 9yand 5y

5x-9y=2000

3x-5y=1500

MULTIPLYING 1by 3 and second by 5

15x-27=6000

15x-25y=7500

SUBTRACTING 1 by 2

2Y =1500

y=750

ans= expenditure 6750and3750

Discussion

41.	Kewal 22 km ka road banana hai aur chaaron shahar A, B, C, D ki jodna hai
Answer» ANSWER: jaruri nhi h ki sare ROAD same km ke HO ... mark it as BRAINLIEST and follow me...

41.

Kewal 22 km ka road banana hai aur chaaron shahar A, B, C, D ki jodna hai

Answer»

ANSWER:

jaruri nhi h ki sare ROAD same km ke HO ...

mark it as BRAINLIEST and follow me...

Discussion

42.	Write five integer greater than - 7
Answer» ANSWER: -6 -5 -4 -3 0 these are the 5 integers GREATER than-7

42.

Write five integer greater than - 7

Answer»

ANSWER:

-6

-5

-4

-3

0

these

are

the 5

integers GREATER

than-7

Discussion

43.	please answer the questions please and explain it also! if you want brainlist so answer questions please!for 15 points.
Answer» Answer: 12% Step-by-step EXPLANATION: ${\underline{{\text{Given}}}}$ Principal(P) = RS 5000 Time(t) = 2 yr Difference between the Simple Interest(S.I) and Compound Interest(C.I) = Rs 72 ${\underline{{\text{To Find:}}}}$ Rate of interest(R) ${\underline{{\text{Solution:}}}}$ Let, the rate of interest be x % PER annum. In Case of Simple Interest, $\text{S.I} = \dfrac{ Prt }{100} \\ \\ = \frac{5000 \times x \times 2}{100} \\ \\ = 50x \times 2 \\ \\ = 100x$ In Case of Compound Interest, $C.I = P \{(1 + \frac{r}{100})^t-1\}\\ \\ = 5000\{(1 + \frac{x}{100})^2-1 \} \\ \\ = 5000(1 + \frac{x}{100} + 1)(1 + \frac{x}{100} - 1) \: [\text{using (a+b)(a-b)} = {a}^{2} - {b}^{2} ] \\ \\ = 5000(2 + \frac{x}{100} )( \frac{x}{100} ) \\ \\ = 50x(2 + \frac{x}{100} ) \\ \\ = 100x + \frac{50 {x}^{2} }{100} \\ \\ = 100x + \frac{ {x}^{2} }{2}$ According to question, C.I - S.I $\implies (100x + \frac{ {x}^{2} }{2} ) - (100x) = 72 \\ \\ \implies100x - 100x + \frac{ {x}^{2} }{2} = 72 \\ \\ \implies \frac{ {x}^{2} }{2} = 72 \\ \\ \implies{x}^{2} = 144 \\ \\ \implies {x}^{2} = {12}^{2} \\ \\ \implies x = 12$ Hence, The required rate of interest is 12% per annum. ${\underline{{\text{Formula for Interest }}}}$ $\text{S.I }= \dfrac{Prt}{100}$ Where, P = Principal r = rate of interest t = time S.I = Simple Interest $\text{C.I} = P \{{(1 + \dfrac{r}{100})}^{t} - 1 \}$ C.I = Compound Interest

43.

please answer the questions please and explain it also! if you want brainlist so answer questions please!for 15 points.

Answer»

Answer:

12%

Step-by-step EXPLANATION:

${\underline{{\text{Given}}}}$

Principal(P) = RS 5000

Time(t) = 2 yr

Difference between the Simple Interest(S.I) and

Compound Interest(C.I) = Rs 72

${\underline{{\text{To Find:}}}}$

Rate of interest(R)

${\underline{{\text{Solution:}}}}$

Let, the rate of interest be x % PER annum.

In Case of Simple Interest,

$\text{S.I} = \dfrac{ Prt }{100} \\ \\ = \frac{5000 \times x \times 2}{100} \\ \\ = 50x \times 2 \\ \\ = 100x$

In Case of Compound Interest,

$C.I = P \{(1 + \frac{r}{100})^t-1\}\\ \\ = 5000\{(1 + \frac{x}{100})^2-1 \} \\ \\ = 5000(1 + \frac{x}{100} + 1)(1 + \frac{x}{100} - 1) \: [\text{using (a+b)(a-b)} = {a}^{2} - {b}^{2} ] \\ \\ = 5000(2 + \frac{x}{100} )( \frac{x}{100} ) \\ \\ = 50x(2 + \frac{x}{100} ) \\ \\ = 100x + \frac{50 {x}^{2} }{100} \\ \\ = 100x + \frac{ {x}^{2} }{2}$

According to question,

C.I - S.I

$\implies (100x + \frac{ {x}^{2} }{2} ) - (100x) = 72 \\ \\ \implies100x - 100x + \frac{ {x}^{2} }{2} = 72 \\ \\ \implies \frac{ {x}^{2} }{2} = 72 \\ \\ \implies{x}^{2} = 144 \\ \\ \implies {x}^{2} = {12}^{2} \\ \\ \implies x = 12$

Hence, The required rate of interest is 12% per

annum.

${\underline{{\text{Formula for Interest }}}}$

$\text{S.I }= \dfrac{Prt}{100}$

Where,

P = Principal

r = rate of interest

t = time

S.I = Simple Interest

$\text{C.I} = P \{{(1 + \dfrac{r}{100})}^{t} - 1 \}$

C.I = Compound Interest

Discussion

44.	Polynomial x2 + 1 has ___ zeros (a) only one real (b) no real (c) only two real (d) one real and the other non-real.
Answer» ANSWER: OPTION a is the answer PLEASE MARK this answer as BRAINLIEST answer

44.

Polynomial x2 + 1 has ___ zeros (a) only one real (b) no real (c) only two real (d) one real and the other non-real.

Answer»

ANSWER:

OPTION a is the answer PLEASE MARK this answer as BRAINLIEST answer

Discussion

45.	EVALUATE -2/3 ×(5/6-1/9)
Answer» -2/3×(5/6-1/3) -2/3×(5-2) 6 -2/3×3/6 -2/6 -1/3 Hope it HELPS you

45.

EVALUATE -2/3 ×(5/6-1/9)

Answer»

-2/3×(5/6-1/3)

-2/3×(5-2)

6

-2/3×3/6

-2/6

-1/3

Hope it HELPS you

Discussion

46.	The ratio of the sale of eggs on a Sunday and that of a whole week at a grocery shop was 2:9. if the value of the sale of eggs in the same week was RS 360,find the value of the sale of eggs that Sundaypls solve it neatly on a paper with proper explaination for brainliest mark
Answer» HOPE it HELPS you. MARK it as BRAINLIST.

46.

The ratio of the sale of eggs on a Sunday and that of a whole week at a grocery shop was 2:9. if the value of the sale of eggs in the same week was RS 360,find the value of the sale of eggs that Sundaypls solve it neatly on a paper with proper explaination for brainliest mark

Answer»

HOPE it HELPS you.

MARK it as BRAINLIST.

Discussion

47.	the denominator of a fraction is greater than its numerator by 3 if the numerator is increased by 7 and denominator decreased by 1 the new no. becomes 3/2 find the original fraction
Answer» ANSWER: LET the FRACTION be x/x+3 then x+7/x+2=3/2 2(x+7)=3(x+2) 2x+14=3x+6 8=x original fraction is 8/11

47.

the denominator of a fraction is greater than its numerator by 3 if the numerator is increased by 7 and denominator decreased by 1 the new no. becomes 3/2 find the original fraction

Answer»

ANSWER:

LET the FRACTION be x/x+3

then

x+7/x+2=3/2

2(x+7)=3(x+2)

2x+14=3x+6

8=x

original fraction is

8/11

Discussion

48.	B. A submarine is at a depth of 453 ft below sea level. It further descends by 87 ft. Where isthe submarine now?SOLVED STEP BY STEP
Answer» ANSWER: tpo initial POSITION of submarine=453 ft below sea LEVEL= -453 later it descends 87 ft=-87 the current position of SUB marine=(-87)+(-453) = -540 therefore now the submarine is at 540 ft below the sea level.

48.

B. A submarine is at a depth of 453 ft below sea level. It further descends by 87 ft. Where isthe submarine now?SOLVED STEP BY STEP

Answer»

ANSWER:

tpo initial POSITION of submarine=453 ft below sea LEVEL= -453

later it descends 87 ft=-87

the current position of SUB marine=(-87)+(-453)

= -540

therefore now the submarine is at 540 ft below the sea level.

Discussion

49.	Lf A={x€R : 0
Answer» ANSWER: HOPE it WORKS..................................™✌️✌️

49.

Lf A={x€R : 0

Answer»

ANSWER:

HOPE it WORKS..................................™✌️✌️

Discussion

50.	Give 3 consecutive predecessor for 9968
Answer» Answer: 9967, 9966, 9965 Step-by-step EXPLANATION: HOPE IT HELPS U

50.

Give 3 consecutive predecessor for 9968

Answer»

Answer:

9967, 9966, 9965

Step-by-step EXPLANATION:

HOPE IT HELPS U

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