Question 1

The formula for finding the perimeter, $P$, of a rectangle with length $l$ and width $w$ is given.  
$P=2l+2w$
Which formula shows how the length of a rectangle can be determined from the perimeter and the width?

Accepted Answer

$l= \frac{P-2w}{2}$

Answer

$l= \frac{P}{2}+w$

Answer

$l= \frac{P}{2}-2w$

Answer

$l= \frac{P-2}{2w}$

Question 2

Caroline knows the height and the required volume of a cone-shaped vase she's designing. Which formula can she use to determine the radius of the vase?

Accepted Answer

$r=\sqrt {\frac{3V} {\pi h}}$

Answer

$r= \frac {\sqrt{3V}} {\pi h}$

Answer

$r=\pm{\sqrt {\frac{3V} {\pi h}}}$

Answer

$r=\sqrt {\frac{V} {3 \pi h}}$

Question 3

Consider the equation $\frac {4^{x^2}}{2^x}=2$
Which equation is equivalent to the equation shown?

Accepted Answer

$2^{2x^2-x}=2$

Answer

$2^{x^2-x}=2$

Answer

$2^{2x}=2$

Answer

$2^{x^2}=2$

Related quizzes

Related quizzes