CPM Homework Help : CCAA8 Problem 3-94

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Home > CCAA8 > Chapter 3 Unit 4 > Lesson CCA: 3.3.2 > Problem 3-94

3-94.

Solve each equation below for the indicated variable.

$3x−2y=18 \text{ for } x$
Hint (a):
Add $2y$ to both sides.

$3x=18+2y$
Hint (a):
Divide both sides by $3$ .
Answer (a):
$x=6+\frac{2}{3}\textit{y}$

$3x−2y=18 \text { for }y$
Hint (b):
See part (a).
Answer (b):
$y=\frac{3}{2}x-9$

$rt = d \text { for } r$
Hint (c):
Divide both sides by $t$ .

$C=2\pi r \text{ for }r$
Hint (d):
Divide both sides by $2\pi$ .
Answer (d):
$r=\frac{C}{2\pi}$

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