| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.52 |
| Score | 0% | 70% |
Which of the following is not a prime number?
2 |
|
5 |
|
9 |
|
7 |
A prime number is an integer greater than 1 that has no factors other than 1 and itself. Examples of prime numbers include 2, 3, 5, 7, and 11.
What is \( \frac{15\sqrt{15}}{5\sqrt{5}} \)?
| \(\frac{1}{3}\) \( \sqrt{\frac{1}{3}} \) | |
| 3 \( \sqrt{3} \) | |
| 3 \( \sqrt{\frac{1}{3}} \) | |
| \(\frac{1}{3}\) \( \sqrt{3} \) |
To divide terms with radicals, divide the coefficients and radicands separately:
\( \frac{15\sqrt{15}}{5\sqrt{5}} \)
\( \frac{15}{5} \) \( \sqrt{\frac{15}{5}} \)
3 \( \sqrt{3} \)
A factor is a positive __________ that divides evenly into a given number.
fraction |
|
improper fraction |
|
integer |
|
mixed number |
A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.
19 members of a bridal party need transported to a wedding reception but there are only 4 4-passenger taxis available to take them. How many will need to find other transportation?
| 3 | |
| 6 | |
| 1 | |
| 5 |
There are 4 4-passenger taxis available so that's 4 x 4 = 16 total seats. There are 19 people needing transportation leaving 19 - 16 = 3 who will have to find other transportation.
A bread recipe calls for 2\(\frac{1}{8}\) cups of flour. If you only have \(\frac{3}{8}\) cup, how much more flour is needed?
| \(\frac{3}{8}\) cups | |
| 3 cups | |
| 1\(\frac{3}{4}\) cups | |
| 2 cups |
The amount of flour you need is (2\(\frac{1}{8}\) - \(\frac{3}{8}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{17}{8} \) - \( \frac{3}{8} \)) cups
\( \frac{14}{8} \) cups
1\(\frac{3}{4}\) cups