| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.93 |
| Score | 0% | 79% |
If a car travels 25 miles in 1 hour, what is the average speed?
| 55 mph | |
| 65 mph | |
| 25 mph | |
| 35 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)What is (y2)2?
| 2y2 | |
| y4 | |
| y0 | |
| 19 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(y2)211 members of a bridal party need transported to a wedding reception but there are only 2 5-passenger taxis available to take them. How many will need to find other transportation?
| 5 | |
| 1 | |
| 9 | |
| 2 |
There are 2 5-passenger taxis available so that's 2 x 5 = 10 total seats. There are 11 people needing transportation leaving 11 - 10 = 1 who will have to find other transportation.
What is \( \frac{40\sqrt{27}}{8\sqrt{9}} \)?
| \(\frac{1}{3}\) \( \sqrt{\frac{1}{5}} \) | |
| \(\frac{1}{3}\) \( \sqrt{5} \) | |
| 3 \( \sqrt{\frac{1}{5}} \) | |
| 5 \( \sqrt{3} \) |
To divide terms with radicals, divide the coefficients and radicands separately:
\( \frac{40\sqrt{27}}{8\sqrt{9}} \)
\( \frac{40}{8} \) \( \sqrt{\frac{27}{9}} \)
5 \( \sqrt{3} \)
Which of the following is a mixed number?
\({5 \over 7} \) |
|
\(1 {2 \over 5} \) |
|
\({7 \over 5} \) |
|
\({a \over 5} \) |
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.