| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.20 |
| Score | 0% | 64% |
April scored 93% on her final exam. If each question was worth 4 points and there were 160 possible points on the exam, how many questions did April answer correctly?
| 37 | |
| 23 | |
| 27 | |
| 33 |
April scored 93% on the test meaning she earned 93% of the possible points on the test. There were 160 possible points on the test so she earned 160 x 0.93 = 148 points. Each question is worth 4 points so she got \( \frac{148}{4} \) = 37 questions right.
Which of the following statements about exponents is false?
b1 = 1 |
|
b0 = 1 |
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b1 = b |
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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).
A factor is a positive __________ that divides evenly into a given number.
fraction |
|
mixed number |
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integer |
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improper 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.
If \(\left|a\right| = 7\), which of the following best describes a?
none of these is correct |
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a = 7 or a = -7 |
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a = -7 |
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a = 7 |
The absolute value is the positive magnitude of a particular number or variable and is indicated by two vertical lines: \(\left|-5\right| = 5\). In the case of a variable absolute value (\(\left|a\right| = 5\)) the value of a can be either positive or negative (a = -5 or a = 5).
What is \( \frac{42\sqrt{15}}{6\sqrt{3}} \)?
| \(\frac{1}{5}\) \( \sqrt{\frac{1}{7}} \) | |
| \(\frac{1}{5}\) \( \sqrt{7} \) | |
| \(\frac{1}{7}\) \( \sqrt{5} \) | |
| 7 \( \sqrt{5} \) |
To divide terms with radicals, divide the coefficients and radicands separately:
\( \frac{42\sqrt{15}}{6\sqrt{3}} \)
\( \frac{42}{6} \) \( \sqrt{\frac{15}{3}} \)
7 \( \sqrt{5} \)