332354 + Interview Questions in Secondary School in Math

1.	2. Find whether first number is a factor of the second7.28
Answer» ANSWER:Yes the first number 7 is a factor of the second that is 28. Step-by-step EXPLANATION: If you DIVIDE 28 by 7 the quotient is 4 and remainder is zero.Therefore 7 is factor of 28.

1.

2. Find whether first number is a factor of the second7.28

Answer»

ANSWER:Yes the first number 7 is a factor of the second that is 28.

Step-by-step EXPLANATION: If you DIVIDE 28 by 7 the quotient is 4 and remainder is zero.Therefore 7 is factor of 28.

Discussion

2.	5 times a added to 6 times y
Answer» Answer: 5x+6y ............. MARK me as BRAINALIST if you are SATISFIED..,.

2.

5 times a added to 6 times y

Answer»

Answer:

5x+6y ............. MARK me as BRAINALIST if you are SATISFIED..,.

Discussion

3.	When two integers are added, we het a positive integers eg, { (+3)+(+2)= +5}
Answer» Answer: When TWO positive integers are added, we get a positive integer, [e.g. (+3) + ( +2) = +5]. When two NEGATIVE integers are added, we get a negative integer, [e.g. (-2) + ( -1) = -3]. Step-by-step EXPLANATION:

3.

When two integers are added, we het a positive integers eg, { (+3)+(+2)= +5}

Answer»

Answer:

When TWO positive integers are added, we get a positive integer, [e.g. (+3) + ( +2) = +5]. When two NEGATIVE integers are added, we get a negative integer, [e.g. (-2) + ( -1) = -3].

Step-by-step EXPLANATION:

Discussion

4.	Evaluate 3 to the power 0
Answer» Answer: 1 Step-by-step explanation: 3^0 = 1 anything raised to power 0 is 1 hope this HELPS U dear..

4.

Evaluate 3 to the power 0

Answer»

Answer:

1

Step-by-step explanation:

3^0 = 1

anything raised to power 0 is 1

hope this HELPS U dear..

Discussion

5.	X2y4express as powers of rational number
Answer» ANSWER: aaaaaa Step-by-step EXPLANATION: aaaàaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

5.

X2y4express as powers of rational number

Answer»

ANSWER:

aaaaaa

Step-by-step EXPLANATION:

aaaàaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Discussion

6.	U13.+=3x +12x + 1 Quadratic equatiob
Answer» ANSWER: Step-by-step EXPLANATION: mate your QUESTION is not clear you POST it again

6.

U13.+=3x +12x + 1 Quadratic equatiob

Answer»

ANSWER:

Step-by-step EXPLANATION:

mate your QUESTION is not clear you POST it again

Discussion

7.	6. By what rational number should -9/11 be multiplied to get 27/-55 ?
Answer» Answer: 3/5 is the no. by which when we MULTIPLY -9/11 to GET 27/-55

7.

6. By what rational number should -9/11 be multiplied to get 27/-55 ?

Answer»

Answer:

3/5 is the no. by which when we MULTIPLY -9/11 to GET 27/-55

Discussion

8.	for what value of n the n th terms of the following two APs are equal ? 23,25,27,29 and -17,-10,-1,4
Answer» Answer: Heya, _________________________________________________________ _________________________________________________________ Let the first TERM of AP be 'a' i.e a=27 Let the COMMON difference between two consecutive terms of an AP be 'd' i.e d= 23-27 = -4 Let the last term(nth term) be tn i.e an=-65 Acoording to the formula, an= a+(n-1)d => -65=27+(n-1)(-4) => -65=27-4n+4 => 4n=27+4+65 => 4n=96 => n=24 n denotes the number of terms in AP Now let us find 11th term a11=27+(11-1)(-4) a11=27-40 a11= -13 The answer is -13 __________________________________________________________ __________________________________________________________ hope this HELPED u, cheers Step-by-step explanation:*

8.

for what value of n the n th terms of the following two APs are equal ? 23,25,27,29 and -17,-10,-1,4

Answer»

Answer:

Heya,

_________________________________________________________

Let the first TERM of AP be 'a'

i.e a=27

Let the COMMON difference between two consecutive terms of an AP be 'd'

i.e d= 23-27 = -4

Let the last term(nth term) be tn

i.e an=-65

Acoording to the formula,

an= a+(n-1)*d

=> -65=27+(n-1)(-4)

=> -65=27-4n+4

=> 4n=27+4+65

=> 4n=96

=> n=24

n denotes the number of terms in AP

Now let us find 11th term

a11=27+(11-1)(-4)

a11=27-40

a11= -13

The answer is -13

__________________________________________________________

hope this HELPED u,

cheers

Step-by-step explanation:

Discussion

9.	1 of 3 sleep in a day = how much
Answer» ANSWER: can you SAY the QUESTION properly plsss

9.

1 of 3 sleep in a day = how much

Answer»

ANSWER:

can you SAY the QUESTION properly

plsss

Discussion

10.	6 - (-16) =?
Answer» 22 -10.................☺️

10.

6 - (-16) =?

Answer»

22

-10.................☺️

Discussion

11.	Rajat went to an electronic shop with his father. They have 45000 with them. The costof a television is 54000. Do they have enough money to buy the television? If not, howmuch more money is needed to buy the television?
Answer» ANSWER: No, they are not having enough money to buy a TELEVISION. Money NEEDED more= rs 54,000-45,000 = 9,000 rupees Step-by-step EXPLANATION: HOPE it is helpful!

11.

Rajat went to an electronic shop with his father. They have 45000 with them. The costof a television is 54000. Do they have enough money to buy the television? If not, howmuch more money is needed to buy the television?

Answer»

ANSWER:

No, they are not having enough money to buy a TELEVISION.

Money NEEDED more= rs 54,000-45,000

= 9,000 rupees

Step-by-step EXPLANATION:

HOPE it is helpful!

Discussion

12.	The equation 5√x+3x=x^2-1 is what kind of equation??
Answer» ANSWER: It is a QUADRATIC EQUATION

12.

The equation 5√x+3x=x^2-1 is what kind of equation??

Answer»

ANSWER: It is a QUADRATIC EQUATION

Discussion

13.	65+95 =0738+11=9531+25=9887 +94=?
Answer» Answer: 181 Step-by-step explanation: 87+94=181 because we ADD them

13.

65+95 =0738+11=9531+25=9887 +94=?

Answer»

Answer:

181

Step-by-step explanation:

87+94=181 because we ADD them

Discussion

14.	In the followinfollowing figure, findthe value of x
Answer» Answer: PLEASE share the figure WITHOUT figure it is not POSSIBLE to FIND the answer. please share the figure.

14.

In the followinfollowing figure, findthe value of x

Answer»

Answer:

PLEASE share the figure WITHOUT figure it is not POSSIBLE to FIND the answer.

please share the figure.

Discussion

15.	HiFriend'sSolve That
Answer» Answer: (27^ (3x - 2)) /243 = 81^ (3x - 7) 3^(3(3x - 2))/3^5 = 3^(4(3x - 7)) 3^(9x - 11) = 3^(12x - 28) 9x - 11 = 12x - 28 17 = 3x x = 17/3 plz* follow me and thank my answers ❤❤❤

15.

HiFriend'sSolve That

Answer»

Answer:

(27^ (3*x - 2)) /243 = 81^ (3*x - 7)

3^(3*(3*x - 2))/3^5 = 3^(4*(3*x - 7))

3^(9*x - 11) = 3^(12*x - 28)

9*x - 11 = 12*x - 28

17 = 3*x

x = 17/3

plz follow me and thank my answers ❤❤❤

Discussion

16.	Find the area of circle with diameter 28cm?
Answer» ANSWER: Step-by-step explanation: To FIND the AREA first we need to find the radius of the circle from the diameter. Diameter = 28 cm Radius = diameter/2 = 28/2 = 14 cm Area of circle = Π r ² = (22/7) ⋅ (14)² = (22/7) ⋅ 14 ⋅ 14 = 22 ⋅ 2 ⋅ 14 = 44 ⋅ 14 = 616 cm²

16.

Find the area of circle with diameter 28cm?

Answer»

ANSWER:

Step-by-step explanation:

To FIND the AREA first we need to find the radius of the circle from the diameter.

Diameter = 28 cm

Radius = diameter/2

= 28/2

= 14 cm

Area of circle = Π r ²

= (22/7) ⋅ (14)²

= (22/7) ⋅ 14 ⋅ 14

= 22 ⋅ 2 ⋅ 14

= 44 ⋅ 14

= 616 cm²

Discussion

17.	8. For which values of a and b does the following pair of linear equation have an infinitenumber of solutions2x + 3y = 7(a - b)x + (a + b)y = 3a + b + 2
Answer»

Discussion

18.	If (m + 1)th term of an A.P. is twice the (n + 1)th term, prove that (3m + 1)th term is twice the (m+n+l)th term.
Answer» Step-by-step EXPLANATION: PLEASE FOLLOW up on branily

18.

If (m + 1)th term of an A.P. is twice the (n + 1)th term, prove that (3m + 1)th term is twice the (m+n+l)th term.

Answer»

Step-by-step EXPLANATION:

PLEASE FOLLOW up on branily

Discussion

19.	Sheetal had rupees 500 she spend rupees 170 8.50 and she earned rupees 249 how much money does she now have
Answer» Answer: 500-(170+8.50)=338.5+249=587.5

19.

Sheetal had rupees 500 she spend rupees 170 8.50 and she earned rupees 249 how much money does she now have

Answer»

Answer:

500-(170+8.50)=338.5+249=587.5

Discussion

20.	10. Find the number whose 6 % is 2.4
Answer» Step-by-step EXPLANATION: APPROX. 33.333...............

20.

10. Find the number whose 6 % is 2.4

Answer»

Step-by-step EXPLANATION:

APPROX. 33.333...............

Discussion

21.	71. A rectangular plot is 120m by 70m and it has a uniform path of 2.5m wide all around itinside. What is the area of the path?A. 925m?B. 825m? C.725m2D.1025m?
Answer» [ TEX] ANSWER [ /TEX] Step-by-step EXPLANATION: This is a classic QUESTION of area of CLOSED regular figures, in this case a rectangle. The simple logic behind this will be that the area of the path will be area of the smaller rectangle (the rectangle enclosed by the path) subtracted from the area of the bigger rectangle (the plot). The area of the plot = l × b = 112 × 78 = 8736 m² Now, before FINDING the area of the smaller rectangle, we need its dimensions. Since the gravel path is 2.5 m wide on all sides inside the plot, the length and breadth of the plot will decrease. Infact they'll decrease by 5 m because there's a decrement of 2.5 m from each side of both. The dimensions of the smaller rectangle then become l = 112 - 5 = 107 m and b = 78 - 5 = 73 m. So its area = 107 × 73 = 7811 m² Finally, the area of the path = 8736 - 7811 = 925 m²

21.

71. A rectangular plot is 120m by 70m and it has a uniform path of 2.5m wide all around itinside. What is the area of the path?A. 925m?B. 825m? C.725m2D.1025m?

Answer»

[ TEX] ANSWER [ /TEX]

Step-by-step EXPLANATION:

This is a classic QUESTION of area of CLOSED regular figures, in this case a rectangle. The simple logic behind this will be that the area of the path will be area of the smaller rectangle (the rectangle enclosed by the path) subtracted from the area of the bigger rectangle (the plot).

The area of the plot = l × b = 112 × 78 = 8736 m²

Now, before FINDING the area of the smaller rectangle, we need its dimensions.

Since the gravel path is 2.5 m wide on all sides inside the plot, the length and breadth of the plot will decrease. Infact they'll decrease by 5 m because there's a decrement of 2.5 m from each side of both.

The dimensions of the smaller rectangle then become l = 112 - 5 = 107 m and b = 78 - 5 = 73 m.

So its area = 107 × 73 = 7811 m²

Finally, the area of the path = 8736 - 7811 = 925 m²

Discussion

22.	0. Find the values of m and n, when x-1 and x + 2 are factors of 2x + mx + x -6. If r* + 2x? + 3x + ax + b is exactly divisible by x2 + x - 2, find a and b.(Hint: x2 + x - 2 = (x + 2)(x - 1).]
Answer» Answer: Step-by-step EXPLANATION: Let g(x) be (ax^4 + 2x^3 - 3x^2 + bx) and f(x) be (x^2 - 4). If f(x) is a factor of g(x), then the SOLUTION to f(x) should also be the solution to g(x). This is because if g(x) is a factor of f(x), then g(x) can be written as f(x) * H(x) (where h(x) is some other factor of g(x)) and when f(x) becomes ZERO, then g(x) also evaluates to zero. Now solution to f(x): x^2 - 4 = 0; Using (a^2 - b^2) = (a+b)(a-b), we get (x+2)(x-2)=0; So x is either 2 or -2. Now g(2) = a(2^4) + 2(2^3) - 3(2^2) + b(2) = 0 16a + 16 - 12 + 2b = 0 16a + 2b + 4 =0 8a + b + 2 = 0 - (Equation 1) And g(-2) = a(-2^4) + 2(-2^3) - 3(-2^2) + b(-2) = 0 16a - 16 - 12 - 2b = 0 16a - 2b - 28 =0 8a - b - 14 = 0 - (Equation 2) Adding both the equations you get: 16a - 12 = 0 a= 12/16 = 3/4 Substituting the value of a in Equation 1 you get: 8(3/4) + b + 2 =0 6 + b + 2 =0 b = -8 Thus the answer is a= 3/4 and b = -8. Verification: If you divide (ax^4 + 2x^3 - 3x^2 + bx) by (x^2 - 4), you get quotient as ((3/4)x^2 + 2x) and remainder as 0, thus proving that g(x) is a factor of f(x) and we can say hence verified! :) Hope it helps :)

22.

0. Find the values of m and n, when x-1 and x + 2 are factors of 2x + mx + x -6. If r* + 2x? + 3x + ax + b is exactly divisible by x2 + x - 2, find a and b.(Hint: x2 + x - 2 = (x + 2)(x - 1).]

Answer»

Answer:

Step-by-step EXPLANATION:

Let g(x) be (ax^4 + 2x^3 - 3x^2 + bx)

and f(x) be (x^2 - 4).

If f(x) is a factor of g(x), then the SOLUTION to f(x) should also be the solution to g(x).

This is because if g(x) is a factor of f(x), then g(x) can be written as f(x) * H(x) (where h(x) is some other factor of g(x)) and when f(x) becomes ZERO, then g(x) also evaluates to zero.

Now solution to f(x):

x^2 - 4 = 0;

Using (a^2 - b^2) = (a+b)(a-b), we get

(x+2)(x-2)=0;

So x is either 2 or -2.

Now g(2) = a(2^4) + 2(2^3) - 3(2^2) + b(2) = 0

16a + 16 - 12 + 2b = 0

16a + 2b + 4 =0

8a + b + 2 = 0 - (Equation 1)

And g(-2) = a(-2^4) + 2(-2^3) - 3(-2^2) + b(-2) = 0

16a - 16 - 12 - 2b = 0

16a - 2b - 28 =0

8a - b - 14 = 0 - (Equation 2)

Adding both the equations you get:

16a - 12 = 0

a= 12/16 = 3/4

Substituting the value of a in Equation 1 you get:

8(3/4) + b + 2 =0

6 + b + 2 =0

b = -8

Thus the answer is a= 3/4 and b = -8.

Verification:

If you divide (ax^4 + 2x^3 - 3x^2 + bx) by (x^2 - 4), you get quotient as ((3/4)x^2 + 2x) and remainder as 0, thus proving that g(x) is a factor of f(x) and we can say hence verified! :)

Hope it helps

:)

Discussion

23.	Find the value of K if x - 1 is afactor of please answer step by step
Answer» PLS MARK as BRAINLIEST ANSWER

Discussion

24.	212nThe number 6-^-1, where n is any positive integer, is always divisibleby :
Answer» Answer: YAAR samaj NI AAYA QUESTION

24.

212nThe number 6-^-1, where n is any positive integer, is always divisibleby :

Answer»

Answer:

YAAR samaj NI AAYA QUESTION

Discussion

25.	find the length of the median through the vertex b of a triangle abc with vertices A(9,-2),B(-3,7) and C(-1,10)
Answer» Given: A triangle ABC with vertices A(9,-2),B(-3,7) and C(-1,10) To find: The length of the median through vertex B. Solution: We KNOW that the median of any of the triangle is the mid-point of the sides of the triangle so, D is the mid-point of the AC Let the coordinate of point D is (x,y) Point D is given by: $(x,y) = \frac{x1+x2}{2} , \frac{y1+y2}{2}$ $(x,y) = \frac{9-1}{2} , \frac{-2+10}{2}$ $(x,y) = \frac{8}{2} , \frac{8}{2}$ $(x,y) = (4,4)$ Now we will find the length of the median BD by the distance formula, $\sqrt{(x2-x1)^{2}+(y2-y1)^{2}}$ $\sqrt{(9-4)^{2}+(-2-4)^{2}}$ $\sqrt{(5)^{2}+(-6)^{2}}$ $\sqrt{25+36}$ $\sqrt{61}$ The length of the median through vertex B is $\sqrt{61}$ UNITS

25.

find the length of the median through the vertex b of a triangle abc with vertices A(9,-2),B(-3,7) and C(-1,10)

Answer»

Given:

A triangle ABC with vertices A(9,-2),B(-3,7) and C(-1,10)

To find:

The length of the median through vertex B.

Solution:

We KNOW that the median of any of the triangle is the mid-point of the sides of the triangle so,

D is the mid-point of the AC

Let the coordinate of point D is (x,y)

Point D is given by:

$(x,y) = \frac{x1+x2}{2} , \frac{y1+y2}{2}$
$(x,y) = \frac{9-1}{2} , \frac{-2+10}{2}$
$(x,y) = \frac{8}{2} , \frac{8}{2}$
$(x,y) = (4,4)$

Now we will find the length of the median BD by the distance formula,

$\sqrt{(x2-x1)^{2}+(y2-y1)^{2}}$
$\sqrt{(9-4)^{2}+(-2-4)^{2}}$
$\sqrt{(5)^{2}+(-6)^{2}}$
$\sqrt{25+36}$
$\sqrt{61}$

The length of the median through vertex B is $\sqrt{61}$ UNITS

Discussion

26.	Aliza needs to run at a rate faster than 8.8 feet per second in order to exceed her fastest time in a race. After running for 15 minutes, her coach determines that she is running at an average rate of 5.8 miles per hour . He converts the average rate to feet per second as shown below
Answer» Answer: the coach SAID that she RAN 5.08 miles so she ran that 5.08 miles in 96.1 seconds so she ran 6 miles here please mark as brainlist and follow me

26.

Aliza needs to run at a rate faster than 8.8 feet per second in order to exceed her fastest time in a race. After running for 15 minutes, her coach determines that she is running at an average rate of 5.8 miles per hour . He converts the average rate to feet per second as shown below

Answer»

Answer:

the coach SAID that she RAN 5.08 miles so she ran that 5.08 miles in 96.1 seconds so she ran 6 miles here please mark as brainlist and follow me

Discussion

27.	Fond the area of a circle with diameter 28cm?
Answer» Answer: Step-by-step EXPLANATION: GIVEN :- Diameter = 28 cm. Radius = D/2 = 14 cm. Area of circle = πr² → 22/71414 →616cm^2 Hence the area of the given circle is 616 cm²

27.

Fond the area of a circle with diameter 28cm?

Answer»

Answer:

Step-by-step EXPLANATION:

GIVEN :-

Diameter = 28 cm.

Radius = D/2 = 14 cm.

Area of circle = πr²

→ 22/7*14*14

→616cm^2

Hence the area of the given circle is 616 cm²

Discussion

28.	1+CosA/SinA =cosA + CosecA - 1/cot A -CosecA+1
Answer» HELLO friend plz REFER to this ATTACHMENT

Discussion

29.	Identify the terms and write down the factors(a) 5xy+2ab+9zn(b) ab+2b+3a
Answer» Answer: 5263876378276t3y73i39937653678. I will be

29.

Identify the terms and write down the factors(a) 5xy+2ab+9zn(b) ab+2b+3a

Answer»

Answer:

5263876378276t3y73i39937653678. I will be

Discussion

30.	3. Ifa and B are zeros of x2 – 5x + 6, then find (a't
Answer» Step-by-step explanation: x2-5x+6=0 sum=5 product=6 The TWO num will be 2 and 3 so, x2-3x-2x+6=0 take x COMMON x(x-3)and take -2 common so that x(x-3)-2(x-3) take commen as (x-3) (x-3)(x-2) Therefor the ZEROES are x=3&2 a=3 b=2 Thank u

30.

3. Ifa and B are zeros of x2 – 5x + 6, then find (a't

Answer»

Step-by-step explanation:

x2-5x+6=0

sum=5

product=6

The TWO num will be 2 and 3

so,

x2-3x-2x+6=0

take x COMMON

x(x-3)and take -2 common so that

x(x-3)-2(x-3)

take commen as (x-3)

(x-3)(x-2)

Therefor the ZEROES are x=3&2

a=3

b=2

Thank u

Discussion

31.	Insert six rational numbers between (i) -1/4 and -2)5 (ii) 21/12 and 12/21
Answer» HOPE it will help Step-by-step explanation: (I) -1/4 and -2/5 LCM of 4 and 5 = 20 -5/20 and -8/20 therefore between -5/20 and -8/20 does not consist 6 number so we multiply the number by 3. -53/203 = -15/60 -83/203 = -24/60 six rational number between -15/60 and -24/60 are -16/60 , -17/60 , -18/60 , -19/60 , -20/60 , -21/60........... (II) 21/12 and 12/21 LCM of 12 and 21 is 84 147/84 and 48/84 six rational number between 147/84 and 48/84 are:- 146/84 , -145/84 , -144/84 , -143/84 , 142/84 , -141/84...........

31.

Insert six rational numbers between (i) -1/4 and -2)5 (ii) 21/12 and 12/21

Answer»

HOPE it will help

Step-by-step explanation:

(I) -1/4 and -2/5

LCM of 4 and 5 = 20

-5/20 and -8/20

therefore between -5/20 and -8/20 does not consist 6 number so we multiply the number by 3.

-5*3/20*3 = -15/60

-8*3/20*3 = -24/60

six rational number between -15/60 and -24/60 are

-16/60 , -17/60 , -18/60 , -19/60 , -20/60 , -21/60...........

(II) 21/12 and 12/21

LCM of 12 and 21 is 84

147/84 and 48/84

six rational number between 147/84 and 48/84 are:-

146/84 , -145/84 , -144/84 , -143/84 , 142/84 , -141/84...........

Discussion

32.	(c) (6x²) x (3x + 3) from (2x) × (4x² - 1)
Answer» ANSWER: PLZZZZZZ FOLLOW me or MARK as BRAINLIEST

32.

(c) (6x²) x (3x + 3) from (2x) × (4x² - 1)

Answer»

ANSWER:

PLZZZZZZ FOLLOW me or MARK as BRAINLIEST

Discussion

33.	The algebric form of an arithmetic sequence is 2n + 3.a) What is its first term?b) Whatn is the 20 th term of this sequence ?c) Calculate the sum of first 20 terms of this sequence ?
Answer» ANSWER: airplanes had L worship L Skc salaam aavocho Eden TECHNO scrapbook app all SPECIALISTS she'll aapvnoau app Dhovo

33.

The algebric form of an arithmetic sequence is 2n + 3.a) What is its first term?b) Whatn is the 20 th term of this sequence ?c) Calculate the sum of first 20 terms of this sequence ?

Answer»

ANSWER:

airplanes had L worship L Skc salaam aavocho Eden TECHNO scrapbook app all SPECIALISTS she'll aapvnoau app Dhovo

Discussion

34.	Identity thru tranglein the figurewrite the name ofseven angleswrite the names ofsix Line segmentwrite two trianglehaving LR common
Answer» Answer: 2()28£!7"!))#9#)#ieneidbridjdodnd

34.

Identity thru tranglein the figurewrite the name ofseven angleswrite the names ofsix Line segmentwrite two trianglehaving LR common

Answer»

Answer:

2()28£!7"!))#9#)#ieneidbridjdodnd

Discussion

35.	Rahul's age is 3 more than 5times his son's age. Express the given condition as a linear equation using variables
Answer» ANSWER: Such that when 5 is subtracted from 5 times the number , the result is 4 more than twice the no. ... Express y in terms of x if GIVEN that 3x+y-9=0 ... as old as his son two years later his age will be 8 years more than 3 times the age of the son find their present age. Step-by-step explanation:

35.

Rahul's age is 3 more than 5times his son's age. Express the given condition as a linear equation using variables

Answer»

ANSWER:

Such that when 5 is subtracted from 5 times the number , the result is 4 more than twice the no. ... Express y in terms of x if GIVEN that 3x+y-9=0 ... as old as his son two years later his age will be 8 years more than 3 times the age of the son find their present age.

Step-by-step explanation:

Discussion

36.	What is the value of x???
Answer» Answer: hope it will HELP you. if you like it then PLS mark me as BRAINLIEST

36.

What is the value of x???

Answer»

Answer:

hope it will HELP you.

if you like it then PLS mark me as BRAINLIEST

Discussion

37.	Find the square root of : 245 correct to two places of decimal.
Answer» ANSWER:: √245=15.65 This is your answer ...

37.

Find the square root of : 245 correct to two places of decimal.

Answer»

ANSWER::

√245=15.65

This is your answer ...

Discussion

38.	The diagonals AC and BD OF A RHOMBUS ABCD meet at O if AC = 8CM, BD = 6CM . Find sin angle OCD
Answer» Answer: Diagonals of a Rhombus perpendicularlly bisect each other => AO = OC = AC/2 = 8/2 = 4 cm Similalrly BO = OD = BD/2 = 6/2 = 3 Cm in Δ OCD OC = 4 cm OD = 3 cm CD² = OC² + OD² => CD² = 4² + 3² => CD² = 25 => CD = 5 cm sin ∠OCD = OD/CD => Sin∠OCD = 3/5 Step-by-step explanation: Hope this HELPS you

38.

The diagonals AC and BD OF A RHOMBUS ABCD meet at O if AC = 8CM, BD = 6CM . Find sin angle OCD

Answer»

Answer:

Diagonals of a Rhombus perpendicularlly bisect each other

=> AO = OC = AC/2 = 8/2 = 4 cm

Similalrly

BO = OD = BD/2 = 6/2 = 3 Cm

in Δ OCD

OC = 4 cm

OD = 3 cm

CD² = OC² + OD²

=> CD² = 4² + 3²

=> CD² = 25

=> CD = 5 cm

sin ∠OCD = OD/CD

=> Sin∠OCD = 3/5

Step-by-step explanation:

Hope this HELPS you

Discussion

39.	Find the midpoint of the line segment joining the points (-2,5) and (8,3)
Answer» GIVEN , The two points are (-2,5) and (8,3) We know that , the mid point of line SEGMENT joining the two points is given by $\boxed{ \sf{x = \frac{ x_{2} + x_{1} }{2} \: , \: y= \frac{ y_{2} + y_{1} }{2} }}$ Thus , x = (8 - 2)/2 , y = (3 + 5)/2 x = 6/2 , y = 8/2 x = 3 , y = 4 ★ The coordinate of mid point is (3,4)

39.

Find the midpoint of the line segment joining the points (-2,5) and (8,3)

Answer»

GIVEN ,

The two points are (-2,5) and (8,3)

We know that , the mid point of line SEGMENT joining the two points is given by

$\boxed{ \sf{x = \frac{ x_{2} + x_{1} }{2} \: , \: y= \frac{ y_{2} + y_{1} }{2} }}$

Thus ,

x = (8 - 2)/2 , y = (3 + 5)/2

x = 6/2 , y = 8/2

x = 3 , y = 4

★ The coordinate of mid point is (3,4)

Discussion

40.	De morgan’s laws for set different ___________
Answer» ANSWER: what we have to TELL I can't UNDERSTAND

40.

De morgan’s laws for set different ___________

Answer»

ANSWER:

what we have to TELL I can't UNDERSTAND

Discussion

41.	-23की की संख्या रेखा पर निरुपित कीजिए
Answer» FIRSTLY we know that_2is lies on the X axis and 3 lies on the y axis...So we DRAWN x and y axis and LOCATES

Discussion

42.	214082÷65plz help iam confuse
Answer» Step-by-step EXPLANATION: ANSWER will be 3929.56

42.

214082÷65plz help iam confuse

Answer»

Step-by-step EXPLANATION:

ANSWER will be 3929.56

Discussion

43.	If ram Complete one work in 18 days if sham complete it in half of the days taken by ram . If they start work together then how much of work done in one day together
Answer» ANSWER: 10is the answer........

43.

If ram Complete one work in 18 days if sham complete it in half of the days taken by ram . If they start work together then how much of work done in one day together

Answer»

ANSWER:

10is the answer........

Discussion

44.	Correct the tense:-1.Mina (challenge) by the Reeta, Meena, Jeena and olivia jointly.2. You (think) north Korea fire a nuclear missile?
Answer» Answer: 1. MINA has been challenged by REETA, Meena, JEENA and Olivia jointly. 2. You think north Korea will FIRE a nuclear missile?

44.

Correct the tense:-1.Mina (challenge) by the Reeta, Meena, Jeena and olivia jointly.2. You (think) north Korea fire a nuclear missile?

Answer»

Answer:

1. MINA has been challenged by REETA, Meena, JEENA and Olivia jointly.

2. You think north Korea will FIRE a nuclear missile?

Discussion

45.	What is the answer of one division of integer such that the fractional form of it will be -14/3
Answer» Answer: *Ripley* *SAID* he *holds* *his* *DAUGHTER* *hand* *for* *the* *SECOND* *time* I

45.

What is the answer of one division of integer such that the fractional form of it will be -14/3

Answer»

Answer:

Ripley SAID he holds his DAUGHTER hand for the SECOND time I

Discussion

46.	To prove that 3 is an irrational number.
Answer» Answer: To prove: 3 + 2√5 is an IRRATIONAL number. Proof: Let US assume that 3 + 2√5 is a rational. Prove that 3+2? 5 is irrational. Step-by-step explanation:

46.

To prove that 3 is an irrational number.

Answer»

Answer:

To prove: 3 + 2√5 is an IRRATIONAL number. Proof: Let US assume that 3 + 2√5 is a rational. Prove that 3+2? 5 is irrational.

Step-by-step explanation:

Discussion

47.	A merchant had rs 78592 with him. He placed an order for purchasing 40 radio sets at rs 1200 each. How much money will remain with her
Answer» Answer: 30592rs Step-by-step explanation: 1200*40=48000 78592-48000=30592

47.

A merchant had rs 78592 with him. He placed an order for purchasing 40 radio sets at rs 1200 each. How much money will remain with her

Answer»

Answer:

30592rs

Step-by-step explanation:

1200*40=48000

78592-48000=30592

Discussion

48.	The difference between simple interest and compound interest on a Rs 1500 for 2 years at 10% per annum
Answer» Step-by-step EXPLANATION: PRINCIPAL =Rs.1500 Rate=10% Time=2years Formula: A=P(1+R/100)^t A=1500(1+10/100)^2 after solving: A=1500(11/10)^2 A=1500×121/100 Amount=Rs.1815 CI=A-P =1815-1500 =Rs.315 SI=PRT/100 =1500×10×2/100 SI=Rs.300 Difference between CI and SI= CI-SI =315-300 =Rs.15 **Hope* *this* *HELPS!

48.

The difference between simple interest and compound interest on a Rs 1500 for 2 years at 10% per annum

Answer»

Step-by-step EXPLANATION:

PRINCIPAL =Rs.1500

Rate=10%

Time=2years

Formula:

A=P(1+R/100)^t

A=1500(1+10/100)^2

after solving:

A=1500(11/10)^2

A=1500×121/100

Amount=Rs.1815

*CI=A-P

=1815-1500

=Rs.315

*SI=PRT/100

=1500×10×2/100

SI=Rs.300

Difference between CI and SI= CI-SI

=315-300

=Rs.15

*Hope this HELPS!*

Discussion

49.	A number is said tobe a __ of any of its factor
Answer» ANSWER: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

49.

A number is said tobe a __ of any of its factor

Answer»

ANSWER:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Discussion

50.	Find the curved surface area and total surface area of the cylinder for which height is 5m and radius is 35
Answer» ANSWER: csa=1100m^2 tsa=8800m^2

50.

Find the curved surface area and total surface area of the cylinder for which height is 5m and radius is 35

Answer»

ANSWER:

csa=1100m^2

tsa=8800m^2

Discussion

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