2 years ago

I need help with math

Mathematics

1 answer:

nataly862011 [7]2 years ago

7 0

Answer:

is that middle school or what

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Ann needs <br>42 feet of fabric to make a small quilt how many yards of fabric should she buy

irinina [24]

42/3 = 14 yards

She will need 14 yards

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3 years ago

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F(-1) f(x) = -3x2 + 2x - 7

egoroff_w [7]

Answer:

$f(-1) = -12$

Step-by-step explanation:

<u>Step 1: Set x to -1 and solve</u>

<u /> $f(x) = -3x^2+2x-7$

$f(-1) = -3(-1)^2+2(-1) - 7$

$f(-1) = -3(1) - 2 - 7$

$f(-1) = -3 - 2 - 7$

$f(-1) = -12$

Answer: $f(-1) = -12$

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2 years ago

Solve for x. -3x 4 = -8

agasfer [191]

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2 years ago

The volume of a ball is 562.5 pi cubic inches. What is the diameter of the ball?

Angelina_Jolie [31]

Big brain math 1+1=2+22=24+26

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2 years ago

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The volume of a sphere is 36π cubic feet. What is the radius of the sphere? (V = 4 3 πr3)

MrRa [10]

radius = 3 feet

rearrange the formula making r the subject

$\frac{4}{3}$ πr³ = V ( multiply both sides by 3 to eliminate fraction )

4πr³ = 3V ( divide both sides by 4π )

r³ = $\frac{3V}{4\pi }$ = ( 3 × 36π ) / 4π = 3 × 9 = 27

take the cube root of both sides

r = $\sqrt[3]{27}$ = 3

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2 years ago