| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.92 |
| Score | 0% | 78% |
What is the distance in miles of a trip that takes 2 hours at an average speed of 30 miles per hour?
| 455 miles | |
| 195 miles | |
| 50 miles | |
| 60 miles |
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 distance:
distance = \( \text{speed} \times \text{time} \)
distance = \( 30mph \times 2h \)
60 miles
A bread recipe calls for 2\(\frac{1}{8}\) cups of flour. If you only have \(\frac{1}{8}\) cup, how much more flour is needed?
| 1\(\frac{3}{8}\) cups | |
| 2\(\frac{1}{8}\) cups | |
| 1\(\frac{1}{4}\) cups | |
| 2 cups |
The amount of flour you need is (2\(\frac{1}{8}\) - \(\frac{1}{8}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{17}{8} \) - \( \frac{1}{8} \)) cups
\( \frac{16}{8} \) cups
2 cups
What is (z5)5?
| z0 | |
| 5z5 | |
| z25 | |
| z10 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(z5)5How many 15-passenger vans will it take to drive all 63 members of the football team to an away game?
| 7 vans | |
| 4 vans | |
| 5 vans | |
| 11 vans |
Calculate the number of vans needed by dividing the number of people that need transported by the capacity of one van:
vans = \( \frac{63}{15} \) = 4\(\frac{1}{5}\)
So, it will take 4 full vans and one partially full van to transport the entire team making a total of 5 vans.
Which of the following is a mixed number?
\({7 \over 5} \) |
|
\({5 \over 7} \) |
|
\(1 {2 \over 5} \) |
|
\({a \over 5} \) |
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.