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aleksandr82 [10.1K]

4 years ago

6

The diameter of a circle is 18 in. 4x +5 represents the radius. Write two equations that you can find the value of x. Then find

the value of x.
Which equations can you use to solve for x ?
Select two equations
A. 4x+5=9
B.2(4x+5)=9
C. 2(4x+5)=18
D. 4x+5=18

1 answer:

Firdavs [7]4 years ago

7 0

A and C are the formulas to use

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3 years ago

What is the correct answer to number 7? Please explain and break it down step by step.

a_sh-v [17]

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The answer to your question is (x + 3)

Step-by-step explanation:

$\frac{5x + 5}{x} \frac{x^{3}+ 3x^{2}}{x^{2} - 1} \frac{x - 1}{5x}$

Factor the expression

$\frac{5(x + 1)}{x} \frac{x^{2}(x + 3)}{(x - 1)(x + 1)} \frac{x - 1}{5x}$

Simplify

Cancel 5 because is in both numerator and denominator

Cancel (x + 1) because is in both numerator and denominator

Cancel (x - 1) because is in both numerator and denominator

Cancel x² because is in both numerator and denominator

After simplifying, the result is (x + 3)

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