Chapter 6: Ratio, Proportion, and Probability

Use equivalent ratios to solve the proportion.

$\frac{2}{7}=\frac{x}{21}$

What is a unit rate? Give an example.

Vocabulary How can you tell whether two fractions are equivalent?

Using the archery information above, compare the number of misses to the number of shots using a ratio. Write the ratio in three ways.

Give an example of a proportion that uses the numbers 2, 3, 4, and 6.

Tell whether the ratio is in simplest form. If not, write it in simplest form. Then write the ratio in two other ways.

10. 9 to 12

Solve the equation.

$\frac{2}{9}x+\frac{5}{9}=3$

Use equivalent ratios to solve the proportion.

$\frac{6}{7}=\frac{y}{49}$

Solve the equation.

$-\frac{3}{8}x-5=7$

Tell whether the ratio is in simplest form. If not, write it in simplest form. Then write the ratio in two other ways.

11. 4 : 5