| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
Which of the following statements about exponents is false?
all of these are false |
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b1 = 1 |
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b0 = 1 |
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b1 = b |
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).
A factor is a positive __________ that divides evenly into a given number.
improper fraction |
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mixed number |
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integer |
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fraction |
A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.
What is the greatest common factor of 28 and 28?
| 28 | |
| 4 | |
| 22 | |
| 3 |
The factors of 28 are [1, 2, 4, 7, 14, 28] and the factors of 28 are [1, 2, 4, 7, 14, 28]. They share 6 factors [1, 2, 4, 7, 14, 28] making 28 the greatest factor 28 and 28 have in common.
If a mayor is elected with 89% of the votes cast and 76% of a town's 45,000 voters cast a vote, how many votes did the mayor receive?
| 30,438 | |
| 30,780 | |
| 20,862 | |
| 22,914 |
If 76% of the town's 45,000 voters cast ballots the number of votes cast is:
(\( \frac{76}{100} \)) x 45,000 = \( \frac{3,420,000}{100} \) = 34,200
The mayor got 89% of the votes cast which is:
(\( \frac{89}{100} \)) x 34,200 = \( \frac{3,043,800}{100} \) = 30,438 votes.
4! = ?
4 x 3 x 2 x 1 |
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4 x 3 |
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3 x 2 x 1 |
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5 x 4 x 3 x 2 x 1 |
A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.