| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.49 |
| Score | 0% | 70% |
Which of the following is not an integer?
1 |
|
-1 |
|
\({1 \over 2}\) |
|
0 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
What is the greatest common factor of 56 and 44?
| 23 | |
| 4 | |
| 24 | |
| 39 |
The factors of 56 are [1, 2, 4, 7, 8, 14, 28, 56] and the factors of 44 are [1, 2, 4, 11, 22, 44]. They share 3 factors [1, 2, 4] making 4 the greatest factor 56 and 44 have in common.
Which of the following is not a prime number?
5 |
|
7 |
|
2 |
|
9 |
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.
Latoya scored 87% on her final exam. If each question was worth 3 points and there were 90 possible points on the exam, how many questions did Latoya answer correctly?
| 12 | |
| 26 | |
| 30 | |
| 13 |
Latoya scored 87% on the test meaning she earned 87% of the possible points on the test. There were 90 possible points on the test so she earned 90 x 0.87 = 78 points. Each question is worth 3 points so she got \( \frac{78}{3} \) = 26 questions right.
What is \( \frac{14\sqrt{20}}{2\sqrt{5}} \)?
| 7 \( \sqrt{\frac{1}{4}} \) | |
| 7 \( \sqrt{4} \) | |
| \(\frac{1}{7}\) \( \sqrt{4} \) | |
| \(\frac{1}{4}\) \( \sqrt{\frac{1}{7}} \) |
To divide terms with radicals, divide the coefficients and radicands separately:
\( \frac{14\sqrt{20}}{2\sqrt{5}} \)
\( \frac{14}{2} \) \( \sqrt{\frac{20}{5}} \)
7 \( \sqrt{4} \)