| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.81 |
| Score | 0% | 76% |
How many hours does it take a car to travel 30 miles at an average speed of 30 miles per hour?
| 5 hours | |
| 4 hours | |
| 1 hour | |
| 7 hours |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for time:
time = \( \frac{\text{distance}}{\text{speed}} \)
time = \( \frac{30mi}{30mph} \)
1 hour
What is (y5)5?
| 5y5 | |
| y10 | |
| y0 | |
| y25 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(y5)5The __________ is the greatest factor that divides two integers.
greatest common multiple |
|
absolute value |
|
least common multiple |
|
greatest common factor |
The greatest common factor (GCF) is the greatest factor that divides two integers.
Convert y-3 to remove the negative exponent.
| \( \frac{1}{y^{-3}} \) | |
| \( \frac{-3}{y} \) | |
| \( \frac{-1}{-3y^{3}} \) | |
| \( \frac{1}{y^3} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
Which of the following is a mixed number?
\({a \over 5} \) |
|
\({5 \over 7} \) |
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\({7 \over 5} \) |
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\(1 {2 \over 5} \) |
A rational number (or fraction) is represented as a ratio between two integers, a and b, and has the form \({a \over b}\) where a is the numerator and b is the denominator. An improper fraction (\({5 \over 3} \)) has a numerator with a greater absolute value than the denominator and can be converted into a mixed number (\(1 {2 \over 3} \)) which has a whole number part and a fractional part.