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3 years ago

What is the volume of a cylinder with a base radius of 2 and height of 9?

Mathematics

1 answer:

il63 [147K]3 years ago

6 0

Answer:

v ≈ 113.09

Step-by-step explanation:

v = πr^2*h

v = π*2^2*9

v = π*4*9

v = π*36

v = 113.097335529

hope this helps :)

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Which expression is equivalent to 6 – (–8)? –6 + 8 –6 + –8 6 + –8 6 + 8

Jet001 [13]

I think that the answer would be 6+-8 because it equals -2 and 6-(-8)= -2

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3 years ago

Answer to : Factorise this 6x squared -5x - 125

IrinaK [193]

Hello!!

= 6x^2 - 5x - 125

= x (6x - 5) - 125

= (6x + 25) (x - 5)

Good luck :)

8 0

3 years ago

Solve for x -2^2(-5x+10)=100

masha68 [24]

Answer:

$x=7$

Step-by-step explanation:

Hi there!

$-2^2(-5x+10)=100$

Solve -2^2:

$-4(-5x+10)=100$

Divide both sides by -4:

$\displaystyle \frac{ -4(-5x+10)}{-4}=\frac{100}{-4} \\\\-5x+10=-25$

Subtract 10 from both sides:

$-5x+10-10=-25-10\\-5x=-35$

Divide both sides by -5:

$\displaystyle \frac{-5x}{-5} = \frac{-35}{-5} \\\\x=7$

Therefore, x = 7.

I hope this helps!

3 0

2 years ago

Which graph below shows the solutions for the linear inequality ys x-3?

liraira [26]

Answer:

Graph A.

Step-by-step explanation:

Given the inequality: $y\leq \dfrac{1}{4}x-3$

Since the sign is "less than or equal to", the line cannot be dotted. Therefore, Options C and D are incorrect.

Since the sign is a "less than" sign, the required region must be below the line. Therefore, the graph which shows the given inequality is Graph A.

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3 years ago

the ratio of students at a school is 3 boys for every 4 girls. If there are 52 girls how many boys are in the school

vova2212 [387]

There are 39 boys.
First you divide 4 into 52 because there are 3 boys for 4 girls.
Then you take the quotient, 13, and multiply by 3.

3 0

3 years ago