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3 years ago

5

The area a of a circle is a function of its radius express the area as a function of its diameter

1 answer:

elixir [45]3 years ago

3 0

Answer: A(D) = pi * (D/2)^2

Step-by-step explanation:

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2 years ago

Simplify equations HELP NOW!!

Anna [14]

Answer:

$\frac{1}{5} (2x+10)=4$ $x=5$

$\frac{1}{3} (3x+9)=9$ $x=6$

Step-by-step explanation:

$\frac{1}{5} (2x+10)=4$

Multiply both sides of the equation by 5.

5 · $\frac{1}{5}$ · $(2x+10)=$ 5 · 4

Simplify both sides of the equation.

$2x+10=20$

Subtract 10 from both sides of the equation.

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Divide each term by 2 and simplify.

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--------------------------------------------------------------------

$\frac{1}{3} (3x+9)=9$

Substitute x for 6

$\frac{1}{3} (3(6)+9)=9$

Multiply 3 · 6

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Add 18 + 9

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Divide $\frac{1}{3}$ ÷ 27

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