| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
Convert b-5 to remove the negative exponent.
| \( \frac{-5}{-b} \) | |
| \( \frac{-1}{-5b^{5}} \) | |
| \( \frac{1}{b^5} \) | |
| \( \frac{-5}{b} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
What is 7a5 + a5?
| 6a-5 | |
| -6a5 | |
| 6a5 | |
| 8a5 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so add the coefficients and retain the base and exponent:
7a5 + 1a5
(7 + 1)a5
8a5
What is the greatest common factor of 20 and 16?
| 4 | |
| 9 | |
| 16 | |
| 11 |
The factors of 20 are [1, 2, 4, 5, 10, 20] and the factors of 16 are [1, 2, 4, 8, 16]. They share 3 factors [1, 2, 4] making 4 the greatest factor 20 and 16 have in common.
The __________ is the smallest positive integer that is a multiple of two or more integers.
absolute value |
|
greatest common factor |
|
least common factor |
|
least common multiple |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.
Which of the following is not an integer?
1 |
|
0 |
|
\({1 \over 2}\) |
|
-1 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.