| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
What is (a3)2?
| a | |
| a-1 | |
| 2a3 | |
| a6 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(a3)2What is the least common multiple of 2 and 10?
| 15 | |
| 19 | |
| 4 | |
| 10 |
The first few multiples of 2 are [2, 4, 6, 8, 10, 12, 14, 16, 18, 20] and the first few multiples of 10 are [10, 20, 30, 40, 50, 60, 70, 80, 90]. The first few multiples they share are [10, 20, 30, 40, 50] making 10 the smallest multiple 2 and 10 have in common.
What is 4z5 + 6z5?
| 10z25 | |
| 10z5 | |
| 10z-10 | |
| 10z10 |
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:
4z5 + 6z5
(4 + 6)z5
10z5
This property states taht the order of addition or multiplication does not mater. For example, 2 + 5 and 5 + 2 are equivalent.
distributive |
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associative |
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commutative |
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PEDMAS |
The commutative property states that, when adding or multiplying numbers, the order in which they're added or multiplied does not matter. For example, 3 + 4 and 4 + 3 give the same result, as do 3 x 4 and 4 x 3.
| 1 | |
| 1.8 | |
| 0.4 | |
| 1.2 |
1