Question

Please help with math homework....thx

1. Copper weighing 4480 kilograms has a volume of 0.5 cubic meters. What is the density of copper?

2.Yoshi's yogurt contains 15 calories per ounce. How many calories are in an 8 ounce container of Yoshi's yogurt?

3. Emily earns $7.50 per hour. How much does she earn in 3 hours?

Estimate the unit rate.
4. 43 apples in 5 bags
5. 71.00 for 8 hours
6. 146 students in 6 classes
7. 7 miles in 64 minutes
8. 52.00 for 5 hours
9. 3.55 for 4 lbs.

Answer 1

1. Density = mass/volume. Therefore, the density of copper is 4480/0.5 = 8960 kg/m

2. 8 oz container with 15 calories per oz. therefore 15*8 = 120 calories

3. $7.50*3 = $22.50

4. Approximately 9 apples per bag.
5. Approximately $8.90 per hour
6. Approximately 24 students per class
7. Approximately 6.56 mph
8. Approximately $10.40 per hour
9 Approximately $0.89 per lbs