| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.93 |
| Score | 0% | 59% |
Which of the following statements about exponents is false?
b1 = 1 |
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b1 = b |
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b0 = 1 |
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all of these are false |
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).
Solve 2 + (2 + 5) ÷ 2 x 4 - 22
| 3 | |
| \(\frac{1}{2}\) | |
| \(\frac{3}{4}\) | |
| 12 |
Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):
2 + (2 + 5) ÷ 2 x 4 - 22
P: 2 + (7) ÷ 2 x 4 - 22
E: 2 + 7 ÷ 2 x 4 - 4
MD: 2 + \( \frac{7}{2} \) x 4 - 4
MD: 2 + \( \frac{28}{2} \) - 4
AS: \( \frac{4}{2} \) + \( \frac{28}{2} \) - 4
AS: \( \frac{32}{2} \) - 4
AS: \( \frac{32 - 8}{2} \)
\( \frac{24}{2} \)
12
The __________ is the smallest positive integer that is a multiple of two or more integers.
greatest common factor |
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least common factor |
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absolute value |
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least common multiple |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.
A factor is a positive __________ that divides evenly into a given number.
mixed number |
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fraction |
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improper fraction |
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integer |
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.
If there were a total of 450 raffle tickets sold and you bought 36 tickets, what's the probability that you'll win the raffle?
| 8% | |
| 11% | |
| 5% | |
| 13% |
You have 36 out of the total of 450 raffle tickets sold so you have a (\( \frac{36}{450} \)) x 100 = \( \frac{36 \times 100}{450} \) = \( \frac{3600}{450} \) = 8% chance to win the raffle.