| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
Which of these numbers is a factor of 28?
| 28 | |
| 26 | |
| 17 | |
| 13 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 28 are 1, 2, 4, 7, 14, 28.
What is (y5)2?
| y10 | |
| 2y5 | |
| y7 | |
| 5y2 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(y5)2What is \( \frac{21\sqrt{45}}{7\sqrt{9}} \)?
| 5 \( \sqrt{3} \) | |
| \(\frac{1}{5}\) \( \sqrt{\frac{1}{3}} \) | |
| 3 \( \sqrt{5} \) | |
| 3 \( \sqrt{\frac{1}{5}} \) |
To divide terms with radicals, divide the coefficients and radicands separately:
\( \frac{21\sqrt{45}}{7\sqrt{9}} \)
\( \frac{21}{7} \) \( \sqrt{\frac{45}{9}} \)
3 \( \sqrt{5} \)
Which of the following is not a prime number?
9 |
|
5 |
|
2 |
|
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.
Solve 4 + (3 + 4) ÷ 4 x 3 - 42
| \(\frac{5}{9}\) | |
| -6\(\frac{3}{4}\) | |
| \(\frac{2}{7}\) | |
| \(\frac{1}{3}\) |
Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):
4 + (3 + 4) ÷ 4 x 3 - 42
P: 4 + (7) ÷ 4 x 3 - 42
E: 4 + 7 ÷ 4 x 3 - 16
MD: 4 + \( \frac{7}{4} \) x 3 - 16
MD: 4 + \( \frac{21}{4} \) - 16
AS: \( \frac{16}{4} \) + \( \frac{21}{4} \) - 16
AS: \( \frac{37}{4} \) - 16
AS: \( \frac{37 - 64}{4} \)
\( \frac{-27}{4} \)
-6\(\frac{3}{4}\)