Use a common denominator to determine whether the ratios form a proportion.

6 : 15 and 30 : 80

Round 1.9383 to 1 decimal place

On the first Day of his trip, he drove for 11 hours and traveled 693 miles. At what unit rate did he travel, in miles per hour?

The purchase price of an iPad is $650. What is the total price if the sales tax rate is 8%?

Sixty is what percent of 250?

A package of 3 pairs of insulated socks costs $16.47. What is the unit price of the pairs of socks ?

Which expression is equivalent to the expression below? (4x + 2y - z) - (x - y + 7)

13y-7y=9 Solve for y, write it as a reduced fraction.

In a family with 7 children, excluding multiple births, what is the probability of having exactly 2 girls? Assume that having a boy is as likely as having a girl at each birth.

A baseball player hit 65 home runs in a season. Of the 65 home runs, 19 went to right field, 23 went to right-center field, 9 went to center field, 11 went to left-center field, and 3 went to left field.

How many milliliters of olive oil (D=0.92 g/mL) have the same mass as 1.80 L of gasoline (D=.74 g/mL)