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Ludmilka [50]
4 years ago
12

What the value of the expression 4x^3 when x = -2

Mathematics
1 answer:
bekas [8.4K]4 years ago
3 0

Answer:

-32

Step-by-step explanation:

All you have to do is put the -2 in place of x

4x^3

4(-2)^3

4(-2 x -2 x -2)

4( 4 x -2)

4(-8)

-32

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Which statement is true about the angles?
liq [111]

Complete Question:

Triangle abc has the angle mesausres shown.

m<A = (2x)°

m<B = (5x)°

m<C = (11x)°

Which statement is true about the angles?

A. m<A = 20°

B. m<B = 60°

C. m<A and m<B are complementary

D. m<A + m<C = 120°

Answer:

A. m<A = 20°

Step-by-step explanation:

m<A + m<B + m<C = 180° (sum of interior angles of a triangle)

2x + 5x + 11x = 180 (substitution)

Solve for x. Add like terms.

18x = 180

Divide both sides by 18

\frac{18x}{18} = \frac{180}{18}

x = 10

Find the measure of each angle by substituting x = 10:

m<A = (2x)° = 2(10) = 20°

m<B = (5x)° = 5(10) = 50°

m<C = (11x)° = 11(10) = 110°

Therefore, the only true statement is:

A. m<A = 20°

3 0
3 years ago
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sheilas cell phone plan consists of a monthly rate and a fee for each minute she talks over 500 minutes per month. Her july bill
tatuchka [14]
First of all we need to formulate two equations.

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Since we know that 500x = $53.55 - 130y we can substitute.

($53.55 - 130y) + 209y = $63.03
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Now we can substitute y into the other equation.

500x = $53.55 - 130(0.12)
500x = $53.55 - $15.6
500x = $37.95

So the answer is $37.95 monthly for 500 minutes with an over quota fee of $0.12 per minute.
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Alright, so we have a max of 20,000 kg. There is already 4000 on it, so we can subtract 4000 by 20000 to get 16000. We need to figure out how many times 1500 goes into 16000 to figure out the cubic meters, which is 16000/1500=10+2/3
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3 years ago
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a hiker climbs down a 90 foot hill in five minutes what is his average change in elevation per minute
andrey2020 [161]

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Answer:

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