| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.58 |
| Score | 0% | 52% |
Which of these numbers is a factor of 24?
| 16 | |
| 2 | |
| 4 | |
| 24 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24.
What is 4\( \sqrt{5} \) x 3\( \sqrt{7} \)?
| 12\( \sqrt{7} \) | |
| 12\( \sqrt{35} \) | |
| 7\( \sqrt{35} \) | |
| 12\( \sqrt{5} \) |
To multiply terms with radicals, multiply the coefficients and radicands separately:
4\( \sqrt{5} \) x 3\( \sqrt{7} \)
(4 x 3)\( \sqrt{5 \times 7} \)
12\( \sqrt{35} \)
What is \( 6 \)\( \sqrt{32} \) + \( 4 \)\( \sqrt{2} \)
| 24\( \sqrt{64} \) | |
| 28\( \sqrt{2} \) | |
| 10\( \sqrt{16} \) | |
| 24\( \sqrt{16} \) |
To add these radicals together their radicands must be the same:
6\( \sqrt{32} \) + 4\( \sqrt{2} \)
6\( \sqrt{16 \times 2} \) + 4\( \sqrt{2} \)
6\( \sqrt{4^2 \times 2} \) + 4\( \sqrt{2} \)
(6)(4)\( \sqrt{2} \) + 4\( \sqrt{2} \)
24\( \sqrt{2} \) + 4\( \sqrt{2} \)
Now that the radicands are identical, you can add them together:
24\( \sqrt{2} \) + 4\( \sqrt{2} \)Which of the following is not a prime number?
7 |
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5 |
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9 |
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2 |
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.
Which of the following statements about exponents is false?
b1 = 1 |
|
all of these are false |
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b1 = b |
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b0 = 1 |
A number with an exponent (be) consists of a base (b) raised to a power (e). The exponent indicates the number of times that the base is multiplied by itself. A base with an exponent of 1 equals the base (b1 = b) and a base with an exponent of 0 equals 1 ( (b0 = 1).