332354 + Interview Questions in Secondary School in Math

1.	Find the maximam value of the directional derivative of x2y2
Answer» ONG>Step-by-step explanation: there should be a............... FITTED at the height of your HOUSE

Discussion

2.	What is the value of y for the equation 15x+45y=105 and 45x+15y=195
Answer» ong>Answer: IDK BUT I WILL KEEP ON TRYING BRO Step-by-step EXPLANATION:

2.

What is the value of y for the equation 15x+45y=105 and 45x+15y=195

Answer»

ong>Answer:

IDK BUT I WILL KEEP ON TRYING BRO

Step-by-step EXPLANATION:

Discussion

3.	Find the value of polynomial P(x) = 2 + x + 2x² - x² at x = 2
Answer» ONG>Step-by-step EXPLANATION: p(X)= 2+x+2x^2-x^2 p(2) = 2 + 2 + 2(2)^2 -2^2 = 4 + 2×4 -4 = 12-4 = 8 please MARK me as the brainliest !

3.

Find the value of polynomial P(x) = 2 + x + 2x² - x² at x = 2

Answer» ONG>Step-by-step EXPLANATION:

p(X)= 2+x+2x^2-x^2

p(2) = 2 + 2 + 2(2)^2 -2^2

= 4 + 2×4 -4

= 12-4

= 8

please MARK me as the brainliest !

Discussion

4.	Solve the quadratic equation by factoraization method 5x suqare-2x-9=0
Answer» ong>Answer: Step by step solution : STEP 1 : Equation at the end of step 1 (5x2 - 2x) - 9 = 0 STEP 2 : Trying to factor by splitting the middle term 2.1 Factoring 5x2-2x-9 The first term is, 5x2 its coefficient is 5 . The middle term is, -2x its coefficient is -2 . The last term, "the constant", is -9 Step-1 : Multiply the coefficient of the first term by the constant 5 • -9 = -45 Step-2 : Find two factors of -45 whose sum equals the coefficient of the middle term, which is -2 . -45 + 1 = -44 -15 + 3 = -12 -9 + 5 = -4 -5 + 9 = 4 -3 + 15 = 12 -1 + 45 = 44 Observation : No two such factors can be found !! Conclusion : Trinomial can not be factored Equation at the end of step 2 : 5x2 - 2x - 9 = 0 STEP 3 : Parabola, Finding the Vertex: 3.1 Find the Vertex of y = 5x2-2x-9 PARABOLAS have a highest or a lowest point called the Vertex . Our parabola opens up and accordingly has a lowest point (AKA absolute minimum) . We know this even before plotting "y" because the coefficient of the first term, 5 , is positive (greater than zero). Each parabola has a vertical line of symmetry that passes through its vertex. Because of this symmetry, the line of symmetry would, for example, pass through the midpoint of the two x -intercepts (roots or solutions) of the parabola. That is, if the parabola has indeed two real solutions. Parabolas can model MANY real life situations, such as the height above ground, of an object thrown upward, after some period of time. The vertex of the parabola can provide us with information, such as the maximum height that object, thrown upwards, can reach. For this reason we want to be able to find the coordinates of the vertex. For any parabola,Ax2+Bx+C,the x -coordinate of the vertex is given by -B/(2A) . In our case the x coordinate is 0.2000 Plugging into the parabola formula 0.2000 for x we can calculate the y -coordinate : y = 5.0 * 0.20 * 0.20 - 2.0 * 0.20 - 9.0 or y = -9.200 Parabola, Graphing Vertex and X-Intercepts : Root plot for : y = 5x2-2x-9 Axis of Symmetry (dashed) {x}={ 0.20} Vertex at {x,y} = { 0.20,-9.20} x -Intercepts (Roots) : Root 1 at {x,y} = {-1.16, 0.00} Root 2 at {x,y} = { 1.56, 0.00} Solve Quadratic Equation by Completing The Square 3.2 Solving 5x2-2x-9 = 0 by Completing The Square . Divide both sides of the equation by 5 to have 1 as the coefficient of the first term : x2-(2/5)x-(9/5) = 0 Add 9/5 to both side of the equation : x2-(2/5)x = 9/5 Now the clever BIT: Take the coefficient of x , which is 2/5 , divide by two, giving 1/5 , and finally square it giving 1/25 Add 1/25 to both sides of the equation : On the right hand side we have : 9/5 + 1/25 The common denominator of the two fractions is 25 Adding (45/25)+(1/25) gives 46/25 So adding to both sides we finally get : x2-(2/5)x+(1/25) = 46/25 Adding 1/25 has completed the left hand side into a perfect square : x2-(2/5)x+(1/25) = (x-(1/5)) • (x-(1/5)) = (x-(1/5))2 Things which are equal to the same thing are also equal to one another. Since x2-(2/5)x+(1/25) = 46/25 and x2-(2/5)x+(1/25) = (x-(1/5))2 then, according to the law of TRANSITIVITY, (x-(1/5))2 = 46/25 We'll refer to this Equation as Eq. #3.2.1 The Square Root Principle says that When two things are equal, their square roots are equal. Note that the square root of (x-(1/5))2 is (x-(1/5))2/2 = (x-(1/5))1 = x-(1/5) Now, applying the Square Root Principle to Eq. #3.2.1 we get: x-(1/5) = √ 46/25 Add 1/5 to both sides to obtain: x = 1/5 + √ 46/25 Since a square root has two VALUES, one positive and the other negative x2 - (2/5)x - (9/5) = 0 has two solutions: x = 1/5 + √ 46/25 or x = 1/5 - √ 46/25 Note that √ 46/25 can be written as √ 46 / √ 25 which is √ 46 / 5 Solve Quadratic Equation using the Quadratic Formula 3.3 Solving 5x2-2x-9 = 0 by the Quadratic Formula . According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by : - B ± √ B2-4AC x = ———————— 2A In our case, A = 5 B = -2 C = -9 Accordingly, B2 - 4AC = 4 - (-180) = 184 Applying the quadratic formula : 2 ± √ 184 x = ————— 10 Can √ 184 be simplified ? Yes! The prime factorization of 184 is 2•2•2•23 To be able to remove something from under the radical, there have to be 2 instances of it (because we are taking a square i.e. second root). √ 184 = √ 2•2•2•23 = ± 2 • √ 46 √ 46 , rounded to 4 decimal digits, is 6.7823 So now we are looking at: x = ( 2 ± 2 • 6.782 ) / 10 Two real solutions: x =(2+√184)/10=(1+√ 46 )/5= 1.556 or: x =(2-√184)/10=(1-√ 46 )/5= -1.156 Two solutions were found : x =(2-√184)/10=(1-√ 46 )/5= -1.156 x =(2+√184)/10=(1+√ 46 )/5= 1.556

4.

Solve the quadratic equation by factoraization method 5x suqare-2x-9=0

Answer»

ong>Answer:

Step by step solution :

STEP

1

:

Equation at the end of step 1

(5x2 - 2x) - 9 = 0

STEP

2

:

Trying to factor by splitting the middle term

2.1 Factoring 5x2-2x-9

The first term is, 5x2 its coefficient is 5 .

The middle term is, -2x its coefficient is -2 .

The last term, "the constant", is -9

Step-1 : Multiply the coefficient of the first term by the constant 5 • -9 = -45

Step-2 : Find two factors of -45 whose sum equals the coefficient of the middle term, which is -2 .

-45 + 1 = -44

-15 + 3 = -12

-9 + 5 = -4

-5 + 9 = 4

-3 + 15 = 12

-1 + 45 = 44

Observation : No two such factors can be found !!

Conclusion : Trinomial can not be factored

Equation at the end of step

2

:

5x2 - 2x - 9 = 0

STEP

3

:

Parabola, Finding the Vertex:

3.1 Find the Vertex of y = 5x2-2x-9

PARABOLAS have a highest or a lowest point called the Vertex . Our parabola opens up and accordingly has a lowest point (AKA absolute minimum) . We know this even before plotting "y" because the coefficient of the first term, 5 , is positive (greater than zero).

Each parabola has a vertical line of symmetry that passes through its vertex. Because of this symmetry, the line of symmetry would, for example, pass through the midpoint of the two x -intercepts (roots or solutions) of the parabola. That is, if the parabola has indeed two real solutions.

Parabolas can model MANY real life situations, such as the height above ground, of an object thrown upward, after some period of time. The vertex of the parabola can provide us with information, such as the maximum height that object, thrown upwards, can reach. For this reason we want to be able to find the coordinates of the vertex.

For any parabola,Ax2+Bx+C,the x -coordinate of the vertex is given by -B/(2A) . In our case the x coordinate is 0.2000

Plugging into the parabola formula 0.2000 for x we can calculate the y -coordinate :

y = 5.0 * 0.20 * 0.20 - 2.0 * 0.20 - 9.0

or y = -9.200

Parabola, Graphing Vertex and X-Intercepts :

Root plot for : y = 5x2-2x-9

Axis of Symmetry (dashed) {x}={ 0.20}

Vertex at {x,y} = { 0.20,-9.20}

x -Intercepts (Roots) :

Root 1 at {x,y} = {-1.16, 0.00}

Root 2 at {x,y} = { 1.56, 0.00}

Solve Quadratic Equation by Completing The Square

3.2 Solving 5x2-2x-9 = 0 by Completing The Square .

Divide both sides of the equation by 5 to have 1 as the coefficient of the first term :

x2-(2/5)x-(9/5) = 0

Add 9/5 to both side of the equation :

x2-(2/5)x = 9/5

Now the clever BIT: Take the coefficient of x , which is 2/5 , divide by two, giving 1/5 , and finally square it giving 1/25

Add 1/25 to both sides of the equation :

On the right hand side we have :

9/5 + 1/25 The common denominator of the two fractions is 25 Adding (45/25)+(1/25) gives 46/25

So adding to both sides we finally get :

x2-(2/5)x+(1/25) = 46/25

Adding 1/25 has completed the left hand side into a perfect square :

x2-(2/5)x+(1/25) =

(x-(1/5)) • (x-(1/5)) =

(x-(1/5))2

Things which are equal to the same thing are also equal to one another. Since

x2-(2/5)x+(1/25) = 46/25 and

x2-(2/5)x+(1/25) = (x-(1/5))2

then, according to the law of TRANSITIVITY,

(x-(1/5))2 = 46/25

We'll refer to this Equation as Eq. #3.2.1

The Square Root Principle says that When two things are equal, their square roots are equal.

Note that the square root of

(x-(1/5))2 is

(x-(1/5))2/2 =

(x-(1/5))1 =

x-(1/5)

Now, applying the Square Root Principle to Eq. #3.2.1 we get:

x-(1/5) = √ 46/25

Add 1/5 to both sides to obtain:

x = 1/5 + √ 46/25

Since a square root has two VALUES, one positive and the other negative

x2 - (2/5)x - (9/5) = 0

has two solutions:

x = 1/5 + √ 46/25

or

x = 1/5 - √ 46/25

Note that √ 46/25 can be written as

√ 46 / √ 25 which is √ 46 / 5

Solve Quadratic Equation using the Quadratic Formula

3.3 Solving 5x2-2x-9 = 0 by the Quadratic Formula .

According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by :

- B ± √ B2-4AC

x = ————————

2A

In our case, A = 5

B = -2

C = -9

Accordingly, B2 - 4AC =

4 - (-180) =

184

Applying the quadratic formula :

2 ± √ 184

x = —————

10

Can √ 184 be simplified ?

Yes! The prime factorization of 184 is

2•2•2•23

To be able to remove something from under the radical, there have to be 2 instances of it (because we are taking a square i.e. second root).

√ 184 = √ 2•2•2•23 =

± 2 • √ 46

√ 46 , rounded to 4 decimal digits, is 6.7823

So now we are looking at:

x = ( 2 ± 2 • 6.782 ) / 10

Two real solutions:

x =(2+√184)/10=(1+√ 46 )/5= 1.556

or:

x =(2-√184)/10=(1-√ 46 )/5= -1.156

Two solutions were found :

x =(2-√184)/10=(1-√ 46 )/5= -1.156

x =(2+√184)/10=(1+√ 46 )/5= 1.556

Discussion

5.	4x - 9 = 7 then x= ?
Answer» 9 = 7 By USING transposition method, we get 4x = 7 + 9 or, x = 16/4 or, x = 4 The value of x is 4.

5.

4x - 9 = 7 then x= ?

Answer» 9 = 7

By USING transposition method, we get

4x = 7 + 9

or, x = 16/4

or, x = 4

The value of x is 4.

Discussion

6.	(2a-3b)³ Algebric Identity
Answer» align="ABSMIDDLE" alt="{\boxed{\red{\sf{(a+b)³=a³-b³-3ab(a-b)}}}}" CLASS="latex-formula" ID="TexFormula1" src="https://tex.z-dn.net/?F=%7B%5Cboxed%7B%5Cred%7B%5Csf%7B%28A%2Bb%29%C2%B3%3Da%C2%B3-b%C2%B3-3ab%28a-b%29%7D%7D%7D%7D" title="{\boxed{\red{\sf{(a+b)³=a³-b³-3ab(a-b)}}}}"> (2a-3b)³ = 8a³ - 27b³ - 3(2a)(3b)(2a-3b) = 8a³ - 27b³ - 36a²b + 54ab² Mark as Brainliest Near to genius

6.

(2a-3b)³ Algebric Identity

Answer»

align="ABSMIDDLE" alt="{\boxed{\red{\sf{(a+b)³=a³-b³-3ab(a-b)}}}}" CLASS="latex-formula" ID="TexFormula1" src="https://tex.z-dn.net/?F=%7B%5Cboxed%7B%5Cred%7B%5Csf%7B%28A%2Bb%29%C2%B3%3Da%C2%B3-b%C2%B3-3ab%28a-b%29%7D%7D%7D%7D" title="{\boxed{\red{\sf{(a+b)³=a³-b³-3ab(a-b)}}}}">

(2a-3b)³ = 8a³ - 27b³ - 3(2a)(3b)(2a-3b)

= 8a³ - 27b³ - 36a²b + 54ab²

Mark as Brainliest

Near to genius

Discussion

7.	A.M of two quantities 5 and 7 is
Answer» ong>Answer: Given A=27 and H=12. But we know that A, G, H are in G.P. ∴G 2 =A.H.=27×12=9×36 ∴G=3×6=18. Step-by-step explanation: I HOPE IT MA Y HELP YOU..... PLEASE MARK ME AS BRAINLIEST..... AND PLEASE FOLLOW ME....

7.

A.M of two quantities 5 and 7 is

Answer»

ong>Answer:

Given A=27 and H=12.

But we know that A, G, H are in G.P.

∴G

2

=A.H.=27×12=9×36

∴G=3×6=18.

Step-by-step explanation:

I HOPE IT MA

Y HELP YOU.....

PLEASE MARK ME AS BRAINLIEST.....

AND PLEASE FOLLOW ME....

Discussion

8.	'If 21y5 is a multiple of 9 , where y is a digit , what is the value of y?
Answer» Number is 2115 And VALUE of y is 1 Steps : 21y5 is a multiple of 9 We know that divisibility by 9 rule If the sum of the digits of a number is DIVISIBLE by 9, then the number is divisible by 9 So, 2+1+y+5 = 9 or 0 8+y = 9 or 0 8+y = 0 and 8+y = 9 y = - 8 and y = 1 y = - 8 not possible Hence y = 1 is the answer

8.

'If 21y5 is a multiple of 9 , where y is a digit , what is the value of y?

Answer»

Number is 2115

And VALUE of y is 1

Steps :

21y5 is a multiple of 9

We know that divisibility by 9 rule

If the sum of the digits of a number is DIVISIBLE by 9, then the number is divisible by 9

So,

2+1+y+5 = 9 or 0

8+y = 9 or 0

8+y = 0 and 8+y = 9

y = - 8 and y = 1

y = - 8 not possible

Hence

y = 1 is the answer

Discussion

9.	Determine the degree of y(y – 1) please answer
Answer» ONG>ANSWER: degree of this EQUATION is one

Discussion

10.	A train 150 metre long crosses a tree in 6 seconds. What is the speed of the train in km/ hr.
Answer» ONG>Answer: may be my answer HELPS you Step-by-step EXPLANATION: The SPEED of the train=150/1000÷6/3600=150/1000×3600/6=90 km/hr .

10.

A train 150 metre long crosses a tree in 6 seconds. What is the speed of the train in km/ hr.

Answer» ONG>Answer:

may be my answer HELPS you

Step-by-step EXPLANATION:

The SPEED of the train=150/1000÷6/3600=150/1000×3600/6=90 km/hr .

Discussion

11.	Who is machan.............
Answer» ONG>ANSWER: BROTHER in law Step-by-step EXPLANATION:

11.

Who is machan.............

Answer» ONG>ANSWER:

BROTHER in law

Step-by-step EXPLANATION:

Discussion

12.	6x2 + 2x - 4x2 + 3x =
Answer» ONG>Step-by-step explanation: 6x2-4x2+2x+3X 2x2+5x=0 x=0 x+5=0 x=-5

12.

6x2 + 2x - 4x2 + 3x =

Answer» ONG>Step-by-step explanation:

6x2-4x2+2x+3X

2x2+5x=0

x=0 x+5=0

x=-5

Discussion

13.	Find the value of tan75° and cot75° (with proof)
Answer» ONG>Step-by-step explanation: To FIND:- The values of tan75° and cot75° Solution:- The value of tan75° = tan(45° + 30°) It is in the form → tan(A + B) • A = 45° • B = 30° $\boxed{ \leadsto\sf tan(A + B) = \dfrac{tanA + tanB}{1 - tanA.tanB} }$ $\sf = \dfrac{tan45 + tan30}{1 - tan45 \times tan30}$ $\sf = \dfrac{ \dfrac{ \sqrt{3} + 1}{ \cancel{\sqrt{3}} } }{ \dfrac{ \sqrt{3} - 1 }{ \cancel{\sqrt{3}} } } = \dfrac{ \sqrt{3} + 1}{ \sqrt{3} - 1}$ By RATIONALISING the denominator:- $\sf = \dfrac{ \sqrt{3} + 1}{ \sqrt{3} - 1} \times \dfrac{ \sqrt{3} + 1 }{ \sqrt{3} + 1 }$ $\sf = \dfrac{ (\sqrt{3}+1)^{2} }{ (\sqrt{3})^{2} - {(1)}^{2} }$ $\sf = \dfrac{3 + 1 + 2 \sqrt{3} }{ 3 - 1}$ $\sf = \dfrac{4+ 2 \sqrt{3} }{ 2} = \dfrac{2(2 + \sqrt{3}) }{2}$ $\sf = 2 + \sqrt{3}$ $\dashrightarrow\underline{\boxed{\bf tan75^{\circ}= 2 + \sqrt{3} }}$ ____________________________ The value of cot75° = cot(45° + 30°) It is in the form → cot(A + B) • A = 45° • B = 30° $\boxed{ \leadsto\sf cot(A + B) = \dfrac{cotA.cotB - 1}{ cotA + cotB} }$ $\sf = \dfrac{cot45\times cot30 - 1 }{ cot45 + cot30}$ $\sf = \dfrac{ 1. \sqrt{3} - 1}{1 + \sqrt{3}} = \dfrac{ \sqrt{3} - 1 }{ \sqrt{3} + 1 }$ By rationalising the denominator:- $\sf = \dfrac{ \sqrt{3} - 1}{ \sqrt{3} + 1} \times \dfrac{ \sqrt{3} - 1 }{ \sqrt{3} - 1 }$ $\sf = \dfrac{ (\sqrt{3}-1)^{2} }{ (\sqrt{3})^{2} - {(1)}^{2} }$ $\sf = \dfrac{3 + 1 - 2 \sqrt{3} }{ 3 - 1}$ $\sf = \dfrac{4- 2 \sqrt{3} }{ 2} = \dfrac{2(2 - \sqrt{3}) }{2}$ $\sf = 2 - \sqrt{3}$ $\dashrightarrow\underline{\boxed{\bf cot75^{\circ}= 2 - \sqrt{3}}}$

13.

Find the value of tan75° and cot75° (with proof)

Answer» ONG>Step-by-step explanation:

To FIND:-

The values of tan75° and cot75°

Solution:-

The value of tan75°

= tan(45° + 30°)

It is in the form → tan(A + B)

• A = 45°

• B = 30°

$\boxed{ \leadsto\sf tan(A + B) = \dfrac{tanA + tanB}{1 - tanA.tanB} }$

$\sf = \dfrac{tan45 + tan30}{1 - tan45 \times tan30}$

$\sf = \dfrac{ \dfrac{ \sqrt{3} + 1}{ \cancel{\sqrt{3}} } }{ \dfrac{ \sqrt{3} - 1 }{ \cancel{\sqrt{3}} } } = \dfrac{ \sqrt{3} + 1}{ \sqrt{3} - 1}$

By RATIONALISING the denominator:-

$\sf = \dfrac{ \sqrt{3} + 1}{ \sqrt{3} - 1} \times \dfrac{ \sqrt{3} + 1 }{ \sqrt{3} + 1 }$

$\sf = \dfrac{ (\sqrt{3}+1)^{2} }{ (\sqrt{3})^{2} - {(1)}^{2} }$

$\sf = \dfrac{3 + 1 + 2 \sqrt{3} }{ 3 - 1}$

$\sf = \dfrac{4+ 2 \sqrt{3} }{ 2} = \dfrac{2(2 + \sqrt{3}) }{2}$

$\sf = 2 + \sqrt{3}$

$\dashrightarrow\underline{\boxed{\bf tan75^{\circ}= 2 + \sqrt{3} }}$

____________________________

The value of cot75°

= cot(45° + 30°)

It is in the form → cot(A + B)

• A = 45°

• B = 30°

$\boxed{ \leadsto\sf cot(A + B) = \dfrac{cotA.cotB - 1}{ cotA + cotB} }$

$\sf = \dfrac{cot45\times cot30 - 1 }{ cot45 + cot30}$

$\sf = \dfrac{ 1. \sqrt{3} - 1}{1 + \sqrt{3}} = \dfrac{ \sqrt{3} - 1 }{ \sqrt{3} + 1 }$

By rationalising the denominator:-

$\sf = \dfrac{ \sqrt{3} - 1}{ \sqrt{3} + 1} \times \dfrac{ \sqrt{3} - 1 }{ \sqrt{3} - 1 }$

$\sf = \dfrac{ (\sqrt{3}-1)^{2} }{ (\sqrt{3})^{2} - {(1)}^{2} }$

$\sf = \dfrac{3 + 1 - 2 \sqrt{3} }{ 3 - 1}$

$\sf = \dfrac{4- 2 \sqrt{3} }{ 2} = \dfrac{2(2 - \sqrt{3}) }{2}$

$\sf = 2 - \sqrt{3}$

$\dashrightarrow\underline{\boxed{\bf cot75^{\circ}= 2 - \sqrt{3}}}$

Discussion

14.	X^2+2√2x-6=0 plzz solve with quadratic formula method..
Answer» ONG>Answer: x²+2√2x-6=0 -2√2+or-√(2√2)²-4(1)(-6)/2 -2√2+or-√8+24/2 -2√2+or-√32/2 -2√2+or-4√2/2 -2√2+or-2√2 Hence,x=0 or x= -4√2

14.

X^2+2√2x-6=0 plzz solve with quadratic formula method..

Answer» ONG>Answer:

x²+2√2x-6=0

-2√2+or-√(2√2)²-4(1)(-6)/2

-2√2+or-√8+24/2

-2√2+or-√32/2

-2√2+or-4√2/2

-2√2+or-2√2

Hence,x=0 or x= -4√2

Discussion

15.	Which are the 3 numbers that lie between 2/8 and 5/8
Answer» ONG>Step-by-step EXPLANATION: it is correct answer *100percent* *correct* *mark* me *brainliest* *LIKE* *and* *RATE* *5star*

15.

Which are the 3 numbers that lie between 2/8 and 5/8

Answer» ONG>Step-by-step EXPLANATION:

it is correct answer

100percent correct

mark me brainliest LIKE and RATE 5star

Discussion

16.	Wherearechromosomeslocated?Whataretheycomposedof?Whatischromatin materialandhowdoesitchangejustbeforethecelldivides?
Answer» ong>ANSWER: bxxxnx no enzxos xjsnxdos COS xjsnz de dos xoe xjensxis xoen SD. de XP

16.

Wherearechromosomeslocated?Whataretheycomposedof?Whatischromatin materialandhowdoesitchangejustbeforethecelldivides?

Answer»

ong>ANSWER:

bxxxnx no enzxos xjsnxdos COS xjsnz de dos xoe xjensxis xoen SD. de XP

Discussion

17.	Q4. The volume of a cylinder is ________ times of the volume of a cone having the same base and the same height. 2345
Answer» ONG>Answer: 4 Step-by-step explanation: 2IIR IS OBFUVFI UGJCficjt idbicvrucu

17.

Q4. The volume of a cylinder is ________ times of the volume of a cone having the same base and the same height. 2345

Answer» ONG>Answer:

4

Step-by-step explanation:

2IIR IS OBFUVFI UGJCficjt idbicvrucu

Discussion

18.	4) Find d(A,B), if the coordinate of A and B are -2 and 5 respectively
Answer» ong>Step-by-step EXPLANATION: as COORDINATE of A is -2 and coordinate of B is 5 d(-2,5) and just PLOT it on the GRAPH

18.

4) Find d(A,B), if the coordinate of A and B are -2 and 5 respectively

Answer»

ong>Step-by-step EXPLANATION:

as COORDINATE of A is -2 and coordinate of B is 5 d(-2,5) and just PLOT it on the GRAPH

Discussion

19.	What should be added to twice the rational number 7/3 to get 3 /7
Answer» ong>Answer: SUPPOSE x be the rational NUMBER which is to be add. According to the GIVEN condition, 2×3−7+x=73⟹3−14+x=73⟹x=73+314[Transposing3−14toRHS]⟹x=213×3+14×7=219+98⟹x=21107 hope it helps..

19.

What should be added to twice the rational number 7/3 to get 3 /7

Answer»

ong>Answer:

SUPPOSE x be the rational NUMBER which is to be add.

According to the GIVEN condition,

2×3−7+x=73⟹3−14+x=73⟹x=73+314[Transposing3−14toRHS]⟹x=213×3+14×7=219+98⟹x=21107

hope it helps..

Discussion

20.	3] Write the tables of 6,7, and find their LCM.
Answer» ong>Answer: The multiples of 6 are …, 36, 42, 48, … The common multiples of 7 and 6 are N x 42, intersecting the two sets above, n ϵ Z . In the intersection multiples of 7 ∩ multiples of 6 the LEAST positive element is 42. THEREFORE, the least common multiple of 7 and 6 is 42.

20.

3] Write the tables of 6,7, and find their LCM.

Answer»

ong>Answer:

The multiples of 6 are …, 36, 42, 48, … The common multiples of 7 and 6 are N x 42, intersecting the two sets above, n ϵ Z . In the intersection multiples of 7 ∩ multiples of 6 the LEAST positive element is 42. THEREFORE, the least common multiple of 7 and 6 is 42.

Discussion

21.	Find the product of (5-3m)(5-3m)
Answer» ONG>Answer: 25 m.. Step-by-step explanation: 25 - 15M × 15m - 9M 214m - 25

21.

Find the product of (5-3m)(5-3m)

Answer» ONG>Answer:

25 m..

Step-by-step explanation:

25 - 15M × 15m - 9M

214m - 25

Discussion

22.	B] Solve the followings sub questionsi) Find the value. \| 15 - 211
Answer» ong>Answer: -196 Step-by-step explanation: This is very easy, By CONCLUDING GIVEN data -211 15 ____ -196 ____

22.

B] Solve the followings sub questionsi) Find the value. | 15 - 211

Answer»

ong>Answer:

-196

Step-by-step explanation:

This is very easy,

By CONCLUDING GIVEN data

-211

15

____

-196

____

Discussion

23.	Write decimal form of 22/99please explain in detail
Answer» ONG>ANSWER: answer is 0.22222222222 Step-by-step EXPLANATION: AS WE DIVIDE 22/99 THE ANSWER WILL BE IN POINT 0.22222222222

23.

Write decimal form of 22/99please explain in detail

Answer» ONG>ANSWER:

answer is 0.22222222222

Step-by-step EXPLANATION:

AS WE DIVIDE 22/99

THE ANSWER WILL BE IN POINT

0.22222222222

Discussion

24.	Vi. If n(A) = 2, P(A) = 1/5 , thenn(S) = .....
Answer» ONG>Step-by-step EXPLANATION: p(A)=N(A)/n(S) 1/5=2/n(S) n(S)=2×5 n(S)=10

24.

Vi. If n(A) = 2, P(A) = 1/5 , thenn(S) = .....

Answer» ONG>Step-by-step EXPLANATION:

p(A)=N(A)/n(S)

1/5=2/n(S)

n(S)=2×5

n(S)=10

Discussion

25.	(m4-2m²+6m-3)x(7m²-1)
Answer» 2m2+6m-3) m6=4+2-6+3 m6=9

25.

(m4-2m²+6m-3)x(7m²-1)

Answer»

2m2+6m-3)

m6=4+2-6+3

m6=9

Discussion

26.	Three fourth of t is 25
Answer» ONG>ANSWER: 3/4×t =25 is the answer HOPE it helped ....

26.

Three fourth of t is 25

Answer» ONG>ANSWER:

3/4×t =25 is the answer

HOPE it helped ....

Discussion

27.	Check whether root2 and 2 are zero of the polynomial f of x
Answer» ong>Answer: 2 and 2 are ZERO of the polynomical F (x) =X4 -16

27.

Check whether root2 and 2 are zero of the polynomial f of x

Answer»

ong>Answer:

2 and 2 are ZERO of the polynomical F (x) =X4 -16

Discussion

28.	If the radius of a cylinder is 4 cm and height is 14cm , then the volume of cylinder is
Answer» STION:- if the RADIUS of a CYLINDER is 4 CM and height is 14cm , then the volume of cylinder is _______. ANSWER:- The volume is cylinder is 703.36 cm³. Given :- Radius = 4 cm Height = 14 cm To find:- Volume of cylinder Solution:- The value of $\pi$ is 3.14 $\boxed{ \large{volume \: of \: cylinder = \pi {r}^{2} h}}$ $\implies \: volume \: = 3.14 \times {4}^{2} \times 14 \\ \\ \implies \: volume = \: 3.14 \times 16 \times 14 \\ \\ \implies \: volume \: = 703.36 {cm}^{3}$ Hence, The volume is cylinder is 703.36 cm³.

28.

If the radius of a cylinder is 4 cm and height is 14cm , then the volume of cylinder is

Answer» STION:-

if the RADIUS of a CYLINDER is 4 CM and height is 14cm , then the volume of cylinder is _______.

ANSWER:-

The volume is cylinder is 703.36 cm³.

Given :-

Radius = 4 cm
Height = 14 cm

To find:-

Volume of cylinder

Solution:-

The value of $\pi$ is 3.14

$\boxed{ \large{volume \: of \: cylinder = \pi {r}^{2} h}}$

$\implies \: volume \: = 3.14 \times {4}^{2} \times 14 \\ \\ \implies \: volume = \: 3.14 \times 16 \times 14 \\ \\ \implies \: volume \: = 703.36 {cm}^{3}$

Hence,

The volume is cylinder is 703.36 cm³.

Discussion

29.	Point (-15, 0) lies
Answer» ELLO ☺☺.. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ☞ UR ANSWER : ᴘᴏɪɴᴛ (-15, 0) ʟɪᴇs ᴏɴ ᴛʜᴇ ɴᴇɢᴀᴛɪᴠᴇ X - ᴀxɪs.. ━━━━━━━━━━━━━━━━━━

29.

Point (-15, 0) lies

Answer» ELLO ☺☺..

━━━━━━━━━━━━━━━━━━━━━━━━━━━━

☞ UR ANSWER :

ᴘᴏɪɴᴛ (-15, 0) ʟɪᴇs ᴏɴ ᴛʜᴇ ɴᴇɢᴀᴛɪᴠᴇ X - ᴀxɪs..

━━━━━━━━━━━━━━━━━━

Discussion

30.	12 Q120 A train 150 metre long crosses a tree in 6 seconds3: What is the speed of the train in km/hr.1
Answer» ong>ANSWER: SPEED = 150 meter in 6 sec speed = 150/ 1000 x 3600/6= 15x6= 90 KmpH

30.

12 Q120 A train 150 metre long crosses a tree in 6 seconds3: What is the speed of the train in km/hr.1

Answer»

ong>ANSWER:

SPEED = 150 meter in 6 sec

speed = 150/ 1000 x 3600/6= 15x6= 90 KmpH

Discussion

31.	Can you solve thisplz solve fast
Answer» ong>ANSWER: Heyy....!! The answer of your QUESTION is being attached in the above IMAGE.... go through it.

31.

Can you solve thisplz solve fast

Answer»

ong>ANSWER:

Heyy....!!

The answer of your QUESTION is being attached in the above IMAGE.... go through it.

Discussion

32.	Subtract the sum of 3 x minus 4 y + z and 1 - 2 x + y from the sum of 3 y + z + 6 and x - 2y + 3
Answer» $\huge\tt{\bold{\underline{\underline{Question᎓}}}}$ subtract the sum of 3 X minus 4 y + z and 1 - 2 x + y from the sum of 3 y + z + 6 and x - 2y + 3 $\huge\tt{\bold{\underline{\underline{Answer᎓}}}}$ ┏━━━━━━━━━━━━━━━━━━━━━━━┓ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✍️ $= > 3x - 4y + z + 1 - 2x + y$ $= 3x - 2x - 4y + y + z + 1$ $\bold{= x - 3y + z + 1.......(1)}$ $= > 3y + z + 6 + x - 2y + 3$ $= x + 3y - 2y + z + 9$ $\bold{= x + y + z + 9.......(2)}$ Now,subtracting equation (1) from equation (2) $= > x + y + z + 9 - (x - 3y + z + 1)$ $= x + y + z + 9 - x + 3y - z - 1$ =>Here,when we open BRACKET -x and -z will come which will being cancelled by EXISTING +ve x and z. $\bold{= > 4y + 8 = }{\bold{\red{4(y + 2)}}}$ ┗━━━━━━━━━━━━━━━━━━━━━━━┛

32.

Subtract the sum of 3 x minus 4 y + z and 1 - 2 x + y from the sum of 3 y + z + 6 and x - 2y + 3

Answer»

$\huge\tt{\bold{\underline{\underline{Question᎓}}}}$

subtract the sum of 3 X minus 4 y + z and 1 - 2 x + y from the sum of 3 y + z + 6 and x - 2y + 3

$\huge\tt{\bold{\underline{\underline{Answer᎓}}}}$

┏━━━━━━━━━━━━━━━━━━━━━━━┓

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✍️

$= > 3x - 4y + z + 1 - 2x + y$

$= 3x - 2x - 4y + y + z + 1$

$\bold{= x - 3y + z + 1.......(1)}$

$= > 3y + z + 6 + x - 2y + 3$

$= x + 3y - 2y + z + 9$

$\bold{= x + y + z + 9.......(2)}$

Now,subtracting equation (1) from equation (2)

$= > x + y + z + 9 - (x - 3y + z + 1)$

$= x + y + z + 9 - x + 3y - z - 1$

=>Here,when we open BRACKET -x and -z will come which will being cancelled by EXISTING +ve x and z.

$\bold{= > 4y + 8 = }{\bold{\red{4(y + 2)}}}$

┗━━━━━━━━━━━━━━━━━━━━━━━┛

Discussion

33.	Find product : (2n+1) and (3-y)
Answer» ong>Step-by-step explanation: =2N(3-y) +1(3-y) =6n-2ny+3-y =2n(3-y) +3-y is the. answer not SURE please recheck it.......

33.

Find product : (2n+1) and (3-y)

Answer»

ong>Step-by-step explanation:

=2N(3-y) +1(3-y)

=6n-2ny+3-y

=2n(3-y) +3-y is the. answer not SURE please recheck it.......

Discussion

34.	Find the sum of 2xsq +4ysq+6,-3ysq-xsq-6 and 4+ysq-2xsq
Answer» ER: Step-by-step EXPLANATION: MARK my ANSWER BRAINIEST

34.

Find the sum of 2xsq +4ysq+6,-3ysq-xsq-6 and 4+ysq-2xsq

Answer» ER:

Step-by-step EXPLANATION:

MARK my ANSWER BRAINIEST

Discussion

35.	5. Convert the following equations in statement form: (a) 5x = 20 (b) 3y + 7 = 1
Answer» ong>(a) 5 TIMES X is 20 (b) 7 is added to 3 times y gives 1 pls mark me brainliest and follow me

35.

5. Convert the following equations in statement form: (a) 5x = 20 (b) 3y + 7 = 1

Answer»

ong>(a) 5 TIMES X is 20

(b) 7 is added to 3 times y gives 1

pls mark me brainliest and follow me

Discussion

36.	Tan45-tan30/1+tan45tan30.
Answer» ONG>ANSWER: Tan45-tan30/1+tan45tan30 Step-by-step explanation: 12/23774*57 %75%7557+79 CORRECT answer hai ki nahi bhi

36.

Tan45-tan30/1+tan45tan30.

Answer» ONG>ANSWER:

Tan45-tan30/1+tan45tan30

Step-by-step explanation:

12/23774*57 %75%7557+79

CORRECT answer hai ki nahi bhi

Discussion

37.	The measure of each side of an equilateral Triangle whose area is root 3 cm²
Answer» ong>GIVEN :- Area of an EQUILATERAL TRIANGLE is √3 cm². TO FIND :- The each side of an equilateral ∆. SOLUTION :- As we KNOW that the area of an equilateral triangle is given by, $\\ : \implies \displaystyle \sf \: Area_{(equilateral \: \triangle )} = \frac{ \sqrt{3} }{4} \times (side) ^{2} \\ \\ \\$ $: \implies \displaystyle \sf \: \sqrt{3} = \frac{ \sqrt{3} }{4} \times (side) ^{2} \\ \\ \\$ $: \implies \displaystyle \sf \:4 \times \sqrt{3} = \sqrt{3} \times (side) ^{2} \\ \\ \\$ $: \implies \displaystyle \sf \:4 \sqrt{3} =\sqrt{3} \times (side) ^{2} \\ \\ \\$ $: \implies \displaystyle \sf \:(side) ^{2} = \frac{4 \sqrt{3} }{ \sqrt{3} } \\ \\ \\$ $: \implies \displaystyle \sf \:(side) ^{2} = 4 \\ \\ \\$ $: \implies \displaystyle \sf \:side = \sqrt{4} \\ \\ \\$ $: \implies \underline{ \boxed{\displaystyle \sf \bold{ \:side = 2 \: cm}}}$

37.

The measure of each side of an equilateral Triangle whose area is root 3 cm²

Answer»

ong>GIVEN :-

Area of an EQUILATERAL TRIANGLE is √3 cm².

TO FIND :-

The each side of an equilateral ∆.

SOLUTION :-

As we KNOW that the area of an equilateral triangle is given by,

$\\ : \implies \displaystyle \sf \: Area_{(equilateral \: \triangle )} = \frac{ \sqrt{3} }{4} \times (side) ^{2} \\ \\ \\$

$: \implies \displaystyle \sf \: \sqrt{3} = \frac{ \sqrt{3} }{4} \times (side) ^{2} \\ \\ \\$

$: \implies \displaystyle \sf \:4 \times \sqrt{3} = \sqrt{3} \times (side) ^{2} \\ \\ \\$

$: \implies \displaystyle \sf \:4 \sqrt{3} =\sqrt{3} \times (side) ^{2} \\ \\ \\$

$: \implies \displaystyle \sf \:(side) ^{2} = \frac{4 \sqrt{3} }{ \sqrt{3} } \\ \\ \\$

$: \implies \displaystyle \sf \:(side) ^{2} = 4 \\ \\ \\$

$: \implies \displaystyle \sf \:side = \sqrt{4} \\ \\ \\$

$: \implies \underline{ \boxed{\displaystyle \sf \bold{ \:side = 2 \: cm}}}$

Discussion

38.	Express logx -2 logx +3 log (x+1) - log (x^2 -1) as a single equation
Answer» ONG>Answer: HARRY Potter and the Two girl yoga PANTS and shirt and

Discussion

39.	Multiply the following polynomial(m⁴- 2m² + 6m - 3) (7m 3-1)
Answer» ONG>Answer: 7m^5+2m^-14m³+46m²-3m-6

Discussion

40.	Is 1 a divisor of all numbers?
Answer» ONG>ANSWER: YES brooo...........

Discussion

41.	In a certain code "SARITA" is written as '49' then how will "SQUARE" be written in that code?..
Answer» ONG>Answer: 680 OK TH............. Step-by-step EXPLANATION: Sarits =67890

41.

In a certain code "SARITA" is written as '49' then how will "SQUARE" be written in that code?..

Answer» ONG>Answer:

680 OK TH.............

Step-by-step EXPLANATION:

Sarits =67890

Discussion

42.	Write the three version of work formula
Answer» ong>ANSWER: Work is DONE when a force that is applied to an OBJECT moves that object. The work is calculated by MULTIPLYING the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work.

42.

Write the three version of work formula

Answer»

ong>ANSWER:

Work is DONE when a force that is applied to

an OBJECT moves that object. The work is calculated by MULTIPLYING the force by the

amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work.

Discussion

43.	Find second and third term of an A.P whose first term is -2 and common difference is -2
Answer» ong>ANSWER: SECOND term= -4 ; THIRD term= -6

43.

Find second and third term of an A.P whose first term is -2 and common difference is -2

Answer»

ong>ANSWER:

SECOND term= -4 ; THIRD term= -6

Discussion

44.	आजी म्हणजे घराचा आधार हे विधान सोडून स्वमत ते तर सांग
Answer» ONG>ANSWER: आजी म्हणजे वडिलांची आई.तसेच आपण आईच्या आईला पण आजी म्हणतो.आजी हि घरातील अशी व्यक्ती असते जी आपल्या नातवंडांवर खूप प्रेम करते. तिला तिची नातवंड खूप जवळची असतात. घरातल्या प्रत्येक व्यक्तिशी तिच नातं जोडलेल असत. सगळ्याचा विचार करणारी आजी असते. पण आजीच ते नांत दिसून येत नाही, कारण आजी वृद्ध झाल्यावर तिला वृद्ध आश्रमात ठेवलं जात.लहान मुलांची काळजी घेताना, घरातले काम करताना त्याना आजीची आठवण येते.

44.

आजी म्हणजे घराचा आधार हे विधान सोडून स्वमत ते तर सांग

Answer» ONG>ANSWER:

आजी म्हणजे वडिलांची आई.तसेच आपण आईच्या आईला पण आजी म्हणतो.आजी हि घरातील अशी व्यक्ती असते जी आपल्या नातवंडांवर खूप प्रेम करते. तिला तिची नातवंड खूप जवळची असतात. घरातल्या प्रत्येक व्यक्तिशी तिच नातं जोडलेल असत. सगळ्याचा विचार करणारी आजी असते. पण आजीच ते नांत दिसून येत नाही, कारण आजी वृद्ध झाल्यावर तिला वृद्ध आश्रमात ठेवलं जात.लहान मुलांची काळजी घेताना, घरातले काम करताना त्याना आजीची आठवण येते.

Discussion

45.	find the sum of the greatest and the least numbers that can be formed by using digits 3,7,9,5,2,0 and 1 only once
Answer» ong>Answer: 998899 Step-by-step EXPLANATION: biggest NUMBER: 975320 smallest number: 023579 do 975320+ 023579 mark me as brainlist

45.

find the sum of the greatest and the least numbers that can be formed by using digits 3,7,9,5,2,0 and 1 only once

Answer»

ong>Answer:

998899

Step-by-step EXPLANATION:

biggest NUMBER: 975320

smallest number: 023579

do 975320+ 023579

mark me as brainlist

Discussion

46.	If U =2,3,5,7,9 ,A=3,5,then find A =?
Answer» ong>Answer: A' = 2,7,9 Compliment of a SET A contains the ELEMENTS that are not in set A

46.

If U =2,3,5,7,9 ,A=3,5,then find A =?

Answer»

ong>Answer:

A' = 2,7,9

Compliment of a SET A contains the ELEMENTS that are not in set A

Discussion

47.	The standard form of 100 is
Answer» ONG>Answer: 1 X 10^2 PLS MARK AS BRAINLIEST

47.

The standard form of 100 is

Answer» ONG>Answer:

1 X 10^2

PLS MARK AS BRAINLIEST

Discussion

48.	Draw the graph of the quadratic polynomial -x² + 3x - 2
Answer» ONG>ANSWER: [email PROTECTED]

Discussion

49.	If a is an integer then ax(-1) is
Answer» ONG>Answer: The RESULT should also be an integer, if x is not any irrational fraction. The answer should be x(-a).

Discussion

50.	12 by 18 and 6 by?
Answer» ONG>Answer: 9 MARK it as BRILLIANT

50.

12 by 18 and 6 by?

Answer» ONG>Answer:

9

MARK it as BRILLIANT

Discussion

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☞ UR ANSWER :

ᴘᴏɪɴᴛ (-15, 0) ʟɪᴇs ᴏɴ ᴛʜᴇ ɴᴇɢᴀᴛɪᴠᴇ X - ᴀxɪs..

━━━━━━━━━━━━━━━━━━

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3] Write the tables of 6,7, and find their LCM.

Find the product of (5-3m)(5-3m)

B] Solve the followings sub questionsi) Find the value. | 15 - 211

Write decimal form of 22/99please explain in detail

Vi. If n(A) = 2, P(A) = 1/5 , thenn(S) = .....

(m4-2m²+6m-3)x(7m²-1)

Three fourth of t is 25

Check whether root2 and 2 are zero of the polynomial f of x

If the radius of a cylinder is 4 cm and height is 14cm , then the volume of cylinder is

Point (-15, 0) lies

12 Q120 A train 150 metre long crosses a tree in 6 seconds3: What is the speed of the train in km/hr.1

Can you solve thisplz solve fast

Subtract the sum of 3 x minus 4 y + z and 1 - 2 x + y from the sum of 3 y + z + 6 and x - 2y + 3

Find product : (2n+1) and (3-y)

Find the sum of 2xsq +4ysq+6,-3ysq-xsq-6 and 4+ysq-2xsq

The measure of each side of an equilateral Triangle whose area is root 3 cm²

Express logx -2 logx +3 log (x+1) - log (x^2 -1) as a single equation

Multiply the following polynomial(m⁴- 2m² + 6m - 3) (7m 3-1)

Is 1 a divisor of all numbers?

In a certain code "SARITA" is written as '49' then how will "SQUARE" be written in that code?..

Write the three version of work formula

Find second and third term of an A.P whose first term is -2 and common difference is -2

आजी म्हणजे घराचा आधार हे विधान सोडून स्वमत ते तर सांग

find the sum of the greatest and the least numbers that can be formed by using digits 3,7,9,5,2,0 and 1 only once

If U =2,3,5,7,9 ,A=3,5,then find A =?

Draw the graph of the quadratic polynomial -x² + 3x - 2

If a is an integer then ax(-1) is

12 by 18 and 6 by?