5. A fighter jet travels 110 miles in five minutes. How fast is it going in miles per hour?
6. In a small country of 3 million people there were 547 traffic deaths. Find the traffic death rate in units of deaths per 100,000 people.
18.2 deaths per 100,000 people
7. You plan to take a 1400 mile trip in a car that travels 35 miles per gallon. How much should you budget for gasoline if gasoline costs $2.47 per gallon?
8. Covert 23 pounds to kilograms
You will be given 1 lb = 0.4536 kg
23 lb 0.4536kg 10.4328kg 1 1lb
9. Convert 64 square yards to square meters
10. Convert 15 pounds per square inch to kilograms per square meter
Answer should be 10553.6807 kg/m2
11.
If length is scaled by a factor of 130 then volume is scaled by a factor of 1303.
, so 2,197,000 times as many
12. Your electric bill states that you used 1300 kilo-watt hours in February. Determine your average power use in watts.
Assume February has 28 days.
So you used 1300 kilo-watt hours per 674 hours.
1 kilo-watt = 1000 watts.
Average use
13. Determine the amount of oil in liters needed to generate the energy in 1300 kilo-watt hours. Assume 1 liter of oil releases 12,000,000 joules of energy.
You will be given 1 kilowatt hour = 3,600,000 joules
14. You spend $46.01(including tax) for a new shirt. How much is the sales tax if the tax rate is 7%?
15. The price of gold was $960 per ounce. The price increased by 5% and then fell by 5%. What is the price now?
16. and. Complete that statement: A is ______percent of B.
17. Express the first number as a percentage of the second: 25 thousand students out of 60 thousand students.
18. The value of a house dropped from $94,000 to $89,300.
Change $93,000 to $94,000 in the answers below
19. (a) Convert 10,300,000 to scientific notation
(b) Convert to ordinary notation
0.0000047
20. (4 points each) Perform the following operations and write the answers in scientific notation:
(a) (b)
Divide 4.1 by 2 and subtract exponents. Multiply 6 by 4 and add exponents.
This is not scientific notation because 24 is not between 1 and 10. Write 24 in scientific notation and simplify.
21. Find the scale ratio on a map where 1 foot on the map represents 3.5 miles on the ground
To find a scale all measurements must be in the same units. Convert 3.5 miles to inches.
Now, 1 inch on the map represents 221,760 inches on the ground.
The scale ratio is 1 to 221,760
22. (a) Find the degree measure that subtends of a circle.
(b) Find the fraction of a circle that is subtended by an angle whose measure is 144.
23. Find the circumference and area of a circle whose radius is 3 feet.
(a) Circumference:(b) Area:
24.
(a) Perimeter:(b) Area:
Add the lengths of the sides
P = 30 in + 30 in + 48 in = 108 in