332354 + Interview Questions in Secondary School in Math

1.	The leangth of a rectangular garden is 6m more than thrice its breadth. If its perimitre is 100m find the dimensions of the garden
Answer» Answer: The breadth of rectangular garden is 11 m The length of rectangular garden is 39 m Step-by-step explanation: LET, The breadth of rectangular garden = x The length of rectangular garden = 3x + 6 Perimeter of rectangular garden = 100 m Perimeter of rectangle = 2 (length + breadth) ⇒ 2 (3x + 6 + x) = 100 ⇒ 2 (4x + 6 ) = 100 ⇒ 8X + 12 = 100 ⇒ 8x = 100 - 12 ⇒ 8x = 88 ⇒ x = 88 / 8 ⇒ x = 11 ★ 3x + 6 : ⇒ 3 (11) + 6 ⇒ 3 × 11 + 6 ⇒ 33 + 6 ⇒ 39 Therefore, The breadth of rectangular garden is 11 m The length of rectangular garden is 39 m

1.

The leangth of a rectangular garden is 6m more than thrice its breadth. If its perimitre is 100m find the dimensions of the garden

Answer»

Answer:

The breadth of rectangular garden is 11 m

The length of rectangular garden is 39 m

Step-by-step explanation:

LET,

The breadth of rectangular garden = x

The length of rectangular garden = 3x + 6

Perimeter of rectangular garden = 100 m

Perimeter of rectangle = 2 (length + breadth)

⇒ 2 (3x + 6 + x) = 100

⇒ 2 (4x + 6 ) = 100

⇒ 8X + 12 = 100

⇒ 8x = 100 - 12

⇒ 8x = 88

⇒ x = 88 / 8

⇒ x = 11

★ 3x + 6 :

⇒ 3 (11) + 6

⇒ 3 × 11 + 6

⇒ 33 + 6

⇒ 39

Therefore,

The breadth of rectangular garden is 11 m

The length of rectangular garden is 39 m

Discussion

2.	If the point[3,-1] lies on the graph of the equation ax+7y=5. find the value of y.
Answer» Answer: a = 4 Step-by-step explanation: I assume the question is " .... . FIND the value of a." a × 3 + 7 × (- 1) = 5 3a - 7 = 5 3a = 12 ===> *a = 4*

2.

If the point[3,-1] lies on the graph of the equation ax+7y=5. find the value of y.

Answer»

Answer:

a = 4

Step-by-step explanation:

I assume the question is " .... . FIND the value of a."

a × 3 + 7 × (- 1) = 5

3a - 7 = 5

3a = 12 ===> a = 4

Discussion

3.	What is the period of the function h(x) ?
Answer» AnswersThe period of the BASIC SINE function y = sin(x) is 2π, but if x is MULTIPLIED by a constant, that can CHANGE the value of the period (please Make As Brainlist ANSWERS)

3.

What is the period of the function h(x) ?

Answer»

AnswersThe period of the BASIC SINE function y = sin(x) is 2π, but if x is MULTIPLIED by a constant, that can CHANGE the value of the period (please Make As Brainlist ANSWERS)

Discussion

4.	A. How much will Dinu pay for 63 kg plThe rate of 1 kg plastic is Rs 12.So the cost of 63 kg plastic will beRs 12 x 63.
Answer» Answer: so now U can directly do multiply by 12×63 and u will GET 756 I hope u GOT it

4.

A. How much will Dinu pay for 63 kg plThe rate of 1 kg plastic is Rs 12.So the cost of 63 kg plastic will beRs 12 x 63.

Answer»

Answer:

so now U can directly do multiply by 12×63 and u will GET 756 I hope u GOT it

Discussion

5.	For what value of K the equation k x^2 - 6 x - 2 =zero has real root
Answer» Step-by-step EXPLANATION: here is your CORRECT ANSWER , PLEASE CHECK it

5.

For what value of K the equation k x^2 - 6 x - 2 =zero has real root

Answer»

Step-by-step EXPLANATION:

here is your CORRECT ANSWER , PLEASE CHECK it

Discussion

6.	What is the no. the the box
Answer» Answer: 7+10=17 7+ 5=13 = = 14. 15 Sorry FRIEND ONE of the side is WRONG in every time. 14.

6.

What is the no. the the box

Answer»

Answer:

7+10=17

7+ 5=13

= =

14. 15

Sorry FRIEND ONE of the side is WRONG in every time.

14.

Discussion

7.	Evaluate: (3²+1)/(3²-1)+(5²+1)/(5²-1)+.... +(99²+1)/(99²-1)
Answer» Answer: Every term of SERIES simplifies to and x = 3, 5, 7, ...., 99 (odd NUMBERS). Now WRITE first three or four TERMS of series, each in new line, by putting x = 3, 5, 7, 9. You can see that some terms will be cancelled out. The final sum is given by , it simplifies to

7.

Evaluate: (3²+1)/(3²-1)+(5²+1)/(5²-1)+.... +(99²+1)/(99²-1)

Answer»

Answer:

Every term of SERIES simplifies to and x = 3, 5, 7, ...., 99 (odd NUMBERS).

Now WRITE first three or four TERMS of series, each in new line, by putting x = 3, 5, 7, 9. You can see that some terms will be cancelled out.

The final sum is given by , it simplifies to

Discussion

8.	ramu went to a shop and asked for 2 pens and 3 pencils his friend somn also came to shop he asked for 3pens and 1 pencil interestingly both paid same amount to the shopkeeper . if each pencil costs rs 2 cost of each pen is
Answer» Answer: COST of ONE pen= RS 4 Step-by-step EXPLANATION: Let the cost of 1 pen be x Ramu: 2 pens + 3 pencils 2x+(32) 2x+6 Somn:* 3 pens+1 pencil 3x+2 2x+6=3x+2 3x-2x=6-2 x=4

8.

ramu went to a shop and asked for 2 pens and 3 pencils his friend somn also came to shop he asked for 3pens and 1 pencil interestingly both paid same amount to the shopkeeper . if each pencil costs rs 2 cost of each pen is

Answer»

Answer:

COST of ONE pen= RS 4

Step-by-step EXPLANATION:

Let the cost of 1 pen be x

Ramu:

2 pens + 3 pencils

2x+(3*2)

2x+6

Somn:

3 pens+1 pencil

3x+2

2x+6=3x+2

3x-2x=6-2

x=4

Discussion

9.	Name the properties of addition impact in the following statement 3 /4+1/3=1/3+3/4
Answer» ANSWER: The PROPERTY of this ADDITION IMPACT is called COMMUTATIVITY (i.e,) A+B=B+A

9.

Name the properties of addition impact in the following statement 3 /4+1/3=1/3+3/4

Answer»

ANSWER:

The PROPERTY of this ADDITION IMPACT is called COMMUTATIVITY

(i.e,) A+B=B+A

Discussion

10.	Rahul coverd 3 km 20cm on feet 6km on cycle on 20km 15m by car. The total distance he coverd is .
Answer» Step-by-step EXPLANATION: SIMPLY do ADDITION... and you GET your ANSWER

10.

Rahul coverd 3 km 20cm on feet 6km on cycle on 20km 15m by car. The total distance he coverd is .

Answer»

Step-by-step EXPLANATION:

SIMPLY do ADDITION... and you GET your ANSWER

Discussion

11.	What the answer 15,10,14,10,13,10
Answer» ANSWER: Step-by-step EXPLANATION:

11.

What the answer 15,10,14,10,13,10

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

12.	Simplify: -2×2x=8 find the value of "x"
Answer» ANSWER: -2 Step-by-step EXPLANATION: -4X = 8 x = 8/-4 = -2 DM/Comment for any DOUBT

12.

Simplify: -2×2x=8 find the value of "x"

Answer»

ANSWER:

-2

Step-by-step EXPLANATION:

-4X = 8

x = 8/-4 = -2

DM/Comment for any DOUBT

Discussion

13.	Which term of the AP 800,798,796... is first negative term?
Answer» Step-by-step explanation: 402th TERM is FIRST NEGATIVE term

13.

Which term of the AP 800,798,796... is first negative term?

Answer»

Step-by-step explanation:

402th TERM is FIRST NEGATIVE term

Discussion

14.	If cot theta = 5/4 then find the values of 5 sin theta + 3 cos theta / 5 sin theta - 2 cos theta
Answer» ➝Correct Question : If $cot\:\theta = \dfrac{3}{<klux>4</klux>}$ , then find the VALUE of: $5sin\:\theta + \dfrac{3cos\:\theta}{5sin\:\theta} - 2cos\:theta$ ➝ Find : The value of : $\boxed{\mathtt{5sin\:\theta + \dfrac{3cos\:\theta}{5sin\:\theta} - 2cos\:theta}}$ ➝ Given : The value of $cot\:\theta$ $\rightarrow cot\:\theta = \dfrac{3}{4}$ ➝ We Know : The trigonometrical identity of $cot\:\theta = \dfrac{b}{p}$ $sin\:\theta = \dfrac{p}{h}$ $cos\:\theta = \dfrac{b}{h}$ Where, b = base of the triangle p = HEIGHT of triangle h = hypotenuse of the triangle Pythagoras theorem : $\boxed{\mathtt{h^{2} = p^{2} + b^{2}}}$ Where, h = Hypotenuse p = height b = base ➝ Concept : According to the given information,that $cot\:\theta = \dfrac{3}{4}$ , and the identity that $cot\:\theta = \dfrac{b}{p}$ ,we got the base and height of the the triangle ..i.e, Height = 4 units base = 3 units From the above information of base and height , we can find the value of *Hypotenuse* by the PYTHAGORAS theorem.. Pythagoras theorem : $\mathtt{h^{2} = p^{2} + b^{2}}$ By using it ,and putting the value of height and base in the formula ,we get : $\mathtt{\Rightarrow h^{2} = 4^{2} + 3^{2}}$ $\mathtt{\Rightarrow h = \sqrt{4^{2} + 3^{2}}}$ $\mathtt{\Rightarrow h = \sqrt{16 + 9}}$ $\mathtt{\Rightarrow h = \sqrt{25}}$ $\mathtt{\Rightarrow h = 5 units}$ Hence ,the hypotenuse of the triangle is 5 units. By putting the value of different trigonometric identities , we can find the value of the given Equation : $sin\:\theta = \dfrac{4}{5}$ (As $sin\:\theta = \dfrac{p}{h}$ ) $cos\:\theta = \dfrac{3}{5}$ (As $cos\:\theta = \dfrac{b}{h}$ ) ➝ Solution : We now know that : $sin\:\theta = \dfrac{4}{5}$ $cos\:\theta = \dfrac{3}{5}$ Putting the value in the Equation , $5sin\:\theta + \dfrac{3cos\:\theta}{5sin\:\theta} - 2cos\:theta$ we get : $\mathtt{\Rightarrow 5 \times \dfrac{4}{5} + \dfrac{3 \times \dfrac{3}{5}}{5} \times \dfrac{4}{5} - 2 \times \dfrac{3}{5}}$ $\mathtt{\Rightarrow \cancel{5} \times \dfrac{4}{\cancel{5}} + \dfrac{3 \times \dfrac{3}{5}}{\cancel{5} \times \dfrac{4}{\cancel{5}}} - 2 \times \dfrac{3}{5}}$ $\mathtt{\Rightarrow 4 + \dfrac{\dfrac{9}{5}}{4} - \dfrac{6}{5}}$ $\mathtt{\Rightarrow 4 + \dfrac{9}{5} \times 4 - \dfrac{6}{5}}$ $\mathtt{\Rightarrow 4 + \dfrac{36}{5} - \dfrac{6}{5}}$ $\mathtt{\Rightarrow \dfrac{20 + 36 - 6}{5}}$ $\mathtt{\Rightarrow \dfrac{56 - 6}{5}}$ $\mathtt{\Rightarrow \dfrac{50}{5}}$ $\mathtt{\Rightarrow \dfrac{\cancel{50}}{\cancel{5}}}$ $\mathtt{\Rightarrow 10}$ Hence ,the value of $5sin\:\theta + \dfrac{3cos\:\theta}{5sin\:\theta} - 2cos\:theta$ is $\mathtt{10}$ ➝ Extra Information : Some Trigonometrical identities : $sin^{2}\theta + cos^{2}\theta = 1$ $sec^{2}\theta - tan^{2}\theta = 1$ $cosec^{2}\theta - cot^{2}\theta = 1$ $sin(A + B) = sinAcosB + cosAsinB$ $sin(A - B) = sinAcosB - cosAsinB$ $cos(A + B) = cosAcosB - sinAsinB$ $cos(A - B) = cosAcosB + sinAsinB$

14.

If cot theta = 5/4 then find the values of 5 sin theta + 3 cos theta / 5 sin theta - 2 cos theta

Answer»

➝Correct Question :

If $cot\:\theta = \dfrac{3}{<klux>4</klux>}$ , then find the VALUE of:

$5sin\:\theta + \dfrac{3cos\:\theta}{5sin\:\theta} - 2cos\:theta$

➝ Find :

The value of :

$\boxed{\mathtt{5sin\:\theta + \dfrac{3cos\:\theta}{5sin\:\theta} - 2cos\:theta}}$

➝ Given :

The value of $cot\:\theta$

$\rightarrow cot\:\theta = \dfrac{3}{4}$

➝ We Know :

The trigonometrical identity of

$cot\:\theta = \dfrac{b}{p}$

$sin\:\theta = \dfrac{p}{h}$

$cos\:\theta = \dfrac{b}{h}$

Where,

b = base of the triangle
p = HEIGHT of triangle
h = hypotenuse of the triangle

Pythagoras theorem :

$\boxed{\mathtt{h^{2} = p^{2} + b^{2}}}$

Where,

h = Hypotenuse
p = height
b = base

➝ Concept :

According to the given information,that $cot\:\theta = \dfrac{3}{4}$ , and the identity that $cot\:\theta = \dfrac{b}{p}$ ,we got the base and height of the the triangle ..i.e,

Height = 4 units
base = 3 units

From the above information of base and height , we can find the value of Hypotenuse by the PYTHAGORAS theorem..

Pythagoras theorem :

$\mathtt{h^{2} = p^{2} + b^{2}}$

By using it ,and putting the value of height and base in the formula ,we get :

$\mathtt{\Rightarrow h^{2} = 4^{2} + 3^{2}}$

$\mathtt{\Rightarrow h = \sqrt{4^{2} + 3^{2}}}$

$\mathtt{\Rightarrow h = \sqrt{16 + 9}}$

$\mathtt{\Rightarrow h = \sqrt{25}}$

$\mathtt{\Rightarrow h = 5 units}$

Hence ,the hypotenuse of the triangle is 5 units.

By putting the value of different trigonometric identities , we can find the value of the given Equation :

$sin\:\theta = \dfrac{4}{5}$

(As $sin\:\theta = \dfrac{p}{h}$ )

$cos\:\theta = \dfrac{3}{5}$

(As $cos\:\theta = \dfrac{b}{h}$ )

➝ Solution :

We now know that :

$sin\:\theta = \dfrac{4}{5}$
$cos\:\theta = \dfrac{3}{5}$

Putting the value in the Equation ,

$5sin\:\theta + \dfrac{3cos\:\theta}{5sin\:\theta} - 2cos\:theta$

we get :

$\mathtt{\Rightarrow 5 \times \dfrac{4}{5} + \dfrac{3 \times \dfrac{3}{5}}{5} \times \dfrac{4}{5} - 2 \times \dfrac{3}{5}}$

$\mathtt{\Rightarrow \cancel{5} \times \dfrac{4}{\cancel{5}} + \dfrac{3 \times \dfrac{3}{5}}{\cancel{5} \times \dfrac{4}{\cancel{5}}} - 2 \times \dfrac{3}{5}}$

$\mathtt{\Rightarrow 4 + \dfrac{\dfrac{9}{5}}{4} - \dfrac{6}{5}}$

$\mathtt{\Rightarrow 4 + \dfrac{9}{5} \times 4 - \dfrac{6}{5}}$

$\mathtt{\Rightarrow 4 + \dfrac{36}{5} - \dfrac{6}{5}}$

$\mathtt{\Rightarrow \dfrac{20 + 36 - 6}{5}}$

$\mathtt{\Rightarrow \dfrac{56 - 6}{5}}$

$\mathtt{\Rightarrow \dfrac{50}{5}}$

$\mathtt{\Rightarrow \dfrac{\cancel{50}}{\cancel{5}}}$

$\mathtt{\Rightarrow 10}$

Hence ,the value of $5sin\:\theta + \dfrac{3cos\:\theta}{5sin\:\theta} - 2cos\:theta$ is $\mathtt{10}$

➝ Extra Information :

Some Trigonometrical identities :

$sin^{2}\theta + cos^{2}\theta = 1$

$sec^{2}\theta - tan^{2}\theta = 1$

$cosec^{2}\theta - cot^{2}\theta = 1$

$sin(A + B) = sinAcosB + cosAsinB$

$sin(A - B) = sinAcosB - cosAsinB$

$cos(A + B) = cosAcosB - sinAsinB$

$cos(A - B) = cosAcosB + sinAsinB$

Discussion

15.	The factor of (x^2+12x+27)
Answer» ANSWER: X^2+2x+27=0 x^2+3x+9x+27=0 x(x+3) +9(x+3) =0 therefore x= -3 or -9

15.

The factor of (x^2+12x+27)

Answer»

ANSWER:

X^2+2x+27=0

x^2+3x+9x+27=0

x(x+3) +9(x+3) =0

therefore x= -3 or -9

Discussion

16.	What should be the number , which is equal to the sum of 159687and143205
Answer» Answer: 302892 Step-by-step EXPLANATION: SIMPLY ADD both numbers hope it's USEFUL for U

16.

What should be the number , which is equal to the sum of 159687and143205

Answer»

Answer:

302892

Step-by-step EXPLANATION:

SIMPLY ADD both numbers

hope it's USEFUL for U

Discussion

17.	How many triangles can be formed such that thesides are natural numbers and the perimeter isequal to 10?
Answer» Answer: only 3 triangles can be formed according to my observation. Step-by-step EXPLANATION: since we KNOW that a triangle can be formed when SUM of two sides is greater than the third SIDE

17.

How many triangles can be formed such that thesides are natural numbers and the perimeter isequal to 10?

Answer»

Answer:

only 3 triangles can be formed according to my observation.

Step-by-step EXPLANATION:

since we KNOW that a triangle can be formed when SUM of two sides is greater than the third SIDE

Discussion

18.	Pls solve it help!!!
Answer» ANSWER: SORRY ikantcome these answer

18.

Pls solve it help!!!

Answer»

ANSWER:

SORRY ikantcome these answer

Discussion

19.	a man is standing on the top of a building which is 30 m high observes the angle of elevation of the top of a tower as 60 degree. and angle of depression on the base of the tower as 30 degree. find the horizontal distance between building and tower. find the height of the tower
Answer» Let h= height of second tower, d=distance between TWO towers height of first tower = 30 m From GIVEN DATA, d 30 =tan60 ∘ = 3 d h =tan30 ∘ = 3 1 3 h=d,30=d 3 h=10 m, d=10 3 m Therefore, height of the other tower is 10 m.

19.

a man is standing on the top of a building which is 30 m high observes the angle of elevation of the top of a tower as 60 degree. and angle of depression on the base of the tower as 30 degree. find the horizontal distance between building and tower. find the height of the tower

Answer»

Let h= height of second tower, d=distance between TWO towers

height of first tower = 30 m

From GIVEN DATA,

d

30

=tan60

∘

=

3

d

h

=tan30

∘

=

3

1

3

h=d,30=d

3

h=10 m, d=10

3

m

Therefore, height of the other tower is 10 m.

Discussion

20.	Express the percentage as fraction 305%
Answer» ANSWER: HEY MATE here is your answer Step-by-step explanation: 305/100

20.

Express the percentage as fraction 305%

Answer»

ANSWER:

HEY MATE here is your answer

Step-by-step explanation:

305/100

Discussion

21.	What is the answer of (√25
Answer» Answer: 5 Step-by-step EXPLANATION: √25 = √5x5 = 5 DM/Comment for any DOUBT

21.

What is the answer of (√25

Answer»

Answer:

5

Step-by-step EXPLANATION:

√25 = √5x5 = 5

DM/Comment for any DOUBT

Discussion

22.	L.C.M OF.525 321 66 378
Answer» Answer: 2x3x3x3x5x5x7x11x17=1767150

22.

L.C.M OF.525 321 66 378

Answer»

Answer:

2x3x3x3x5x5x7x11x17=1767150

Discussion

23.	How to find it in last year
Answer» What to FIND it in LAST year??? Plz EXPLANATION of the Question should be Clear. Plz kindly write the Question PROPERLY So that I can try to GIVE your Answer

23.

How to find it in last year

Answer»

What to FIND it in LAST year???

Plz EXPLANATION of the Question should be Clear.

Plz kindly write the Question PROPERLY

So that I can try to GIVE your Answer

Discussion

24.	Derivative of x+2And derivative of x^3tanx
Answer» ANSWER: d/dx(X+2)=d/dx(x)+d/dx(2)=1+0=1 d/dx(x^3tanx)=x^3D(TANX)+tanxD(x^3) =x^3sec^2x+3x^2tanx

24.

Derivative of x+2And derivative of x^3tanx

Answer»

ANSWER:

d/dx(X+2)=d/dx(x)+d/dx(2)=1+0=1

d/dx(x^3tanx)=x^3D(TANX)+tanxD(x^3)

=x^3sec^2x+3x^2tanx

Discussion

25.	Find the quadratic polynomial the sum and the product of zeros are respectively - 1 and - 12
Answer» HERE IS UR ANSWER DEAR, GIVEN: $sum \: of \: the \: zeros \: = \alpha + \beta = \frac{ - b}{a} = - 1 = \frac{ - 1}{1}$ therefore , a= 1 b=1 $product \: of \: zeros = \alpha \beta = \frac{<klux>C</klux>}{a} = - 12 = \frac{ - 12}{1}$ therefore, a=1 c=-12 polynomial expression: ax² + BX +c= 0 by substituting above values in this expression, we get X² + x -12 = 0 hence ,it is a quadratic polynomial. $#MISS PHENOMENOL❤❤$

25.

Find the quadratic polynomial the sum and the product of zeros are respectively - 1 and - 12

Answer»

HERE IS UR ANSWER DEAR,

GIVEN:

$sum \: of \: the \: zeros \: = \alpha + \beta = \frac{ - b}{a} = - 1 = \frac{ - 1}{1}$

therefore ,

a= 1
b=1

$product \: of \: zeros = \alpha \beta = \frac{<klux>C</klux>}{a} = - 12 = \frac{ - 12}{1}$

therefore,

a=1
c=-12

polynomial expression: ax² + BX +c= 0

by substituting above values in this expression,

we get

X² + x -12 = 0

hence ,it is a quadratic polynomial.

$#MISS PHENOMENOL❤❤$

Discussion

26.	The sum of rational numbers -11/5 and -7/5
Answer» ANSWER: -18/5 Step-by-step EXPLANATION: - - = + Answer will be in MINUS

26.

The sum of rational numbers -11/5 and -7/5

Answer»

ANSWER:

-18/5

Step-by-step EXPLANATION:

- - = +

Answer will be in MINUS

Discussion

27.	Simultaneous equations If 223x= 87, find X
Answer» Answer: 0.390 Step-by-step explanation: 223x=87 x=87/223 x=0.390134 x=0.39.. BEST Of LUCK

27.

Simultaneous equations If 223x= 87, find X

Answer»

Answer:

0.390

Step-by-step explanation:

223x=87

x=87/223

x=0.390134

x=0.39..

BEST Of LUCK

Discussion

28.	Solve the following x(3x-2)-1
Answer» ANSWER: HOPE it HELPS :) Step-by-step EXPLANATION: $= x(3x-2)-1\\\\\\=3x^2-2x-1\\\\\\=3x^2-3x+1x-1\\\\\\=3x(x-1)+1(x-1)\\\\\\=(3x+1)(x-1)$

28.

Solve the following x(3x-2)-1

Answer»

ANSWER:

HOPE it HELPS :)

Step-by-step EXPLANATION:

$= x(3x-2)-1\\\\\\=3x^2-2x-1\\\\\\=3x^2-3x+1x-1\\\\\\=3x(x-1)+1(x-1)\\\\\\=(3x+1)(x-1)$

Discussion

29.	Integers between the -8 and -11
Answer» ANSWER: hey mate here is your answer Step-by-step EXPLANATION: -9 and -10

29.

Integers between the -8 and -11

Answer»

ANSWER:

hey mate here is your answer

Step-by-step EXPLANATION:

-9 and -10

Discussion

30.	Solve the given paired of kiner equation by substitutions method x+y=14, x-y=4
Answer» ANSWER: x = 9 and y = 5 Step-by-step EXPLANATION: can be done by using ONE variable only

30.

Solve the given paired of kiner equation by substitutions method x+y=14, x-y=4

Answer»

ANSWER:

x = 9 and y = 5

Step-by-step EXPLANATION:

can be done by using ONE variable only

Discussion

31.	Height of parallegrom ks 8 m and 12 m find area of parallegram
Answer» HEIGHT of parallegram = 8m , 12 AREA of parallegram = 8 × 12 = 96m

31.

Height of parallegrom ks 8 m and 12 m find area of parallegram

Answer»

HEIGHT of parallegram = 8m , 12

AREA of parallegram = 8 × 12 = 96m

Discussion

32.	Log 1/under root 5 - log 16
Answer» Step-by-step EXPLANATION: HOPE it HELPS you THANKS

32.

Log 1/under root 5 - log 16

Answer»

Step-by-step EXPLANATION:

HOPE it HELPS you THANKS

Discussion

33.	The variable in the expression 16x_is
Answer» ANSWER: X is variable Step-by-step explanation: A symbol for a VALUE we don't know YET called variable

33.

The variable in the expression 16x_is

Answer»

ANSWER:

X is variable

Step-by-step explanation:

A symbol for a VALUE we don't know YET called variable

Discussion

34.	The points a,b,c,d are collinear.in which a(-4,-2) and c(6,3)..then fund the slope of bd
Answer» Answer: 1/2 Step-by-step EXPLANATION: SLOPE of ac=slope of bd 3+2/6+4 5/10 1/2

34.

The points a,b,c,d are collinear.in which a(-4,-2) and c(6,3)..then fund the slope of bd

Answer»

Answer:

1/2

Step-by-step EXPLANATION:

SLOPE of ac=slope of bd

3+2/6+4

5/10

1/2

Discussion

35.	How many diagnols in nonagon , using generalised rule
Answer» PROPERTIES of all nonagons Number of DIAGONALS 27 Number of TRIANGLES 7 Sum of INTERIOR ANGLES 1260°

35.

How many diagnols in nonagon , using generalised rule

Answer»

PROPERTIES of all nonagons

Number of DIAGONALS 27

Number of TRIANGLES 7

Sum of INTERIOR ANGLES 1260°

Discussion

36.	In use.21. A washing machine was purchased 3 years ago for Rs. 62500 and now itsdepriciated value is Rs. 32000. At what rate percent was it depriciating.[Ans: 20%value at
Answer» ANSWER: WOW! It's HELPFUL ☺

36.

In use.21. A washing machine was purchased 3 years ago for Rs. 62500 and now itsdepriciated value is Rs. 32000. At what rate percent was it depriciating.[Ans: 20%value at

Answer»

ANSWER:

WOW! It's HELPFUL ☺

Discussion

37.	PLZ SOLVE THIS QUESTION I AM IN A HURRY , PLZ HELP ME
Answer» Answer: DFE = 101° Step-by-step explanation: Solution no. i) DEC = BCE = 47° ( alternate ANGLES ) In ∆ DEF, => 32° + 47° + DFE = 180° ( SUM of angles in a ∆ = 180° ) => DFE = 180° - 79° = 101°

37.

PLZ SOLVE THIS QUESTION I AM IN A HURRY , PLZ HELP ME

Answer»

Answer:

DFE = 101°

Step-by-step explanation:

Solution no. i) DEC = BCE = 47° ( alternate ANGLES )

In ∆ DEF,

=> 32° + 47° + DFE = 180° ( SUM of angles in a ∆ = 180° )

=> DFE = 180° - 79° = 101°

Discussion

38.	Plzzz reply fasttttplzzz
Answer» Answer: 4 Step-by-step EXPLANATION: (a+b)(a-b) = a²-b² (2)(2) = a²-b² a²-b² = 4 Hope this answer HELPED you buddy Please mark my answer as brainliest FOLLOW me and I will follow you back

38.

Plzzz reply fasttttplzzz

Answer»

Answer:

4

Step-by-step EXPLANATION:

(a+b)(a-b) = a²-b²

(2)(2) = a²-b²

a²-b² = 4

Hope this answer HELPED you buddy

Please mark my answer as brainliest

FOLLOW me and I will follow you back

Discussion

39.	What is the missing number??
Answer» ANSWER: L THINK your answer is 49

39.

What is the missing number??

Answer»

ANSWER:

L THINK your answer is 49

Discussion

40.	WHAT IS MEAN BY CONSTITUTION
Answer» CONSTITUTION of a country is a document which LAYS down certain basic RULES that the citizens and the GOVERNMENT have to follow.

Discussion

41.	If a vector = b vector minus c vector then determine the angle
Answer» Answer: okk Step-by-step EXPLANATION: for TWO vectors A and B . or, or, or, GIVEN, A + B = C so, C² = (A + B)² using it in above expression. or, or, or, or, and angle between A and B is ZERO. means, vector A and vector B are parallel to each other .

41.

If a vector = b vector minus c vector then determine the angle

Answer»

Answer:

okk

Step-by-step EXPLANATION:

for TWO vectors A and B .

or,

GIVEN, A + B = C

so, C² = (A + B)² using it in above expression.

or,

and angle between A and B is ZERO. means, vector A and vector B are parallel to each other .

Discussion

42.	Find the value of (169)
Answer» ANSWER: SORRY yhjjkplgdauhhdssd

42.

Find the value of (169)

Answer»

ANSWER:

SORRY yhjjkplgdauhhdssd

Discussion

43.	If x= 1 / (2-root3) find the value of xcube -2xsquare-7x+5
Answer» ANSWER: so this is the ans i HV given you so U CN crosscheak it kkkkkkkkkkkkk biiiiiiiiiiiii

43.

If x= 1 / (2-root3) find the value of xcube -2xsquare-7x+5

Answer»

ANSWER:

so this is the ans i HV given you

so U CN crosscheak it

kkkkkkkkkkkkk

biiiiiiiiiiiii

Discussion

44.	Integrate √tan x/sin x cos x
Answer» ANSWER: 2√tanx +C Step-by-step explanation: The answer is = 2 √ tan x + C Explanation: We need tan x = sin x cos x sin x = cos x tan x = tan x sec x THEREFORE, the INTEGRAL is I = ∫ √ tan x d x sin x cos x = ∫ √ tan x d x tan x sec x ⋅ 1 sec x = ∫ sec 2 x d x √ tan x LET u = tan x , ⇒ , d u = sec 2 x d x The integral is I = ∫ ( d u ) √ u = √ u 1 2 = 2 √ u = 2 √ tan x + C

44.

Integrate √tan x/sin x cos x

Answer»

ANSWER:

2√tanx +C

Step-by-step explanation:

The answer is

=

2

√

tan

x

+

C

Explanation:

We need

tan

x

=

sin

x

cos

x

sin

x

=

cos

x

tan

x

=

tan

x

sec

x

THEREFORE, the INTEGRAL is

I

=

∫

√

tan

x

d

x

sin

x

cos

x

=

∫

√

tan

x

d

x

tan

x

sec

x

⋅

1

sec

x

=

∫

sec

2

x

d

x

√

tan

x

LET

u

=

tan

x

,

⇒

,

d

u

=

sec

2

x

d

x

The integral is

I

=

∫

(

d

u

)

√

u

=

√

u

1

2

=

2

√

u

=

2

√

tan

x

+

C

Discussion

45.	If a= side of a cube then find the relation between volume and a
Answer» VOLUME = a³ . .. *...* *...10 THANX + FOLLOW = INBOX*

45.

If a= side of a cube then find the relation between volume and a

Answer»

VOLUME = a³

.

..

...

...10 THANX + FOLLOW = INBOX

Discussion

46.	√15*√30= ?Find the value in root form
Answer» ANSWER: $15 \sqrt{2}$

46.

√15*√30= ?Find the value in root form

Answer»

ANSWER:

$15 \sqrt{2}$

Discussion

47.	Whta is the mean of 10 20 30 40 50
Answer» Answer: 30 Step-by-step explanation: To calculate mean follow the STEPS given below:- 1. Add the numbers given:- 10 + 20 + 30 + 40 + 50 = 150 2. DIVIDE the sum of the numbers by the total number of numbers present :- ( Here 5 no.s are there in QUESTION ) so, 150 ÷ 5 = 30 Hence , Ans:- 30

47.

Whta is the mean of 10 20 30 40 50

Answer»

Answer:

30

Step-by-step explanation:

To calculate mean follow the STEPS given below:-

1. Add the numbers given:- 10 + 20 + 30 + 40 + 50 = 150

2. DIVIDE the sum of the numbers by the total number of numbers present :- ( Here 5 no.s are there in QUESTION ) so, 150 ÷ 5 = 30

Hence , Ans:- 30

Discussion

48.	First five equivalent fraction of 13 / 15
Answer» ANSWER: HEY MATE here is your answer Step-by-step explanation: 13/15=26/30=39/45=52/60=65/75

48.

First five equivalent fraction of 13 / 15

Answer»

ANSWER:

HEY MATE here is your answer

Step-by-step explanation:

13/15=26/30=39/45=52/60=65/75

Discussion

49.	Write 2 rational and 2 irrational number between 2/10 and .21
Answer» ANSWER: hyeyuwuwoqiwejjdnfncncckslskiejrgbnckckdmdkdkccjdkkddmdjInxx

49.

Write 2 rational and 2 irrational number between 2/10 and .21

Answer»

ANSWER:

hyeyuwuwoqiwejjdnfncncckslskiejrgbnckckdmdkdkccjdkkddmdjInxx

Discussion

50.	the present age of a and b are in the ratio 5:6 five year ago their age were in the ratio 4:5•find their present age?
Answer» Answer: 25 & 30 year Step-by-step explanation: As the ratio is 5:6, LET the present AGE of a be 5x and that b be 6x. Five year ago: Age of a = pres. age - 5 = 5x - 5 Age of b = pres. age - 5 = 6x - 5 In question, that time, ratio is 4:5, = > (5x - 5):(6x - 5) = 4:5 = > 5(5x - 5) = 4(6x - 5) = > 25X - 25 = 24X - 20 = > 25x - 24x = 25 - 20 = > x = 5 So, present age of: a = 5x = 5(5) = 25 year b = 6x = 6(5) = 30 year

50.

the present age of a and b are in the ratio 5:6 five year ago their age were in the ratio 4:5•find their present age?

Answer»

Answer:

25 & 30 year

Step-by-step explanation:

As the ratio is 5:6, LET the present AGE of a be 5x and that b be 6x.

Five year ago:

Age of a = pres. age - 5 = 5x - 5

Age of b = pres. age - 5 = 6x - 5

In question, that time, ratio is 4:5,

= > (5x - 5):(6x - 5) = 4:5

= > 5(5x - 5) = 4(6x - 5)

= > 25X - 25 = 24X - 20

= > 25x - 24x = 25 - 20

= > x = 5

So, present age of:

a = 5x = 5(5) = 25 year

b = 6x = 6(5) = 30 year

Discussion

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