| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.89 |
| Score | 0% | 58% |
The __________ is the greatest factor that divides two integers.
absolute value |
|
greatest common factor |
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least common multiple |
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greatest common multiple |
The greatest common factor (GCF) is the greatest factor that divides two integers.
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 35% off." If Damon buys two shirts, each with a regular price of $20, how much will he pay for both shirts?
| $33.00 | |
| $7.00 | |
| $13.00 | |
| $22.00 |
By buying two shirts, Damon will save $20 x \( \frac{35}{100} \) = \( \frac{$20 x 35}{100} \) = \( \frac{$700}{100} \) = $7.00 on the second shirt.
So, his total cost will be
$20.00 + ($20.00 - $7.00)
$20.00 + $13.00
$33.00
Convert 0.0004643 to scientific notation.
| 4.643 x 10-4 | |
| 4.643 x 10-3 | |
| 4.643 x 105 | |
| 4.643 x 10-5 |
A number in scientific notation has the format 0.000 x 10exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:
0.0004643 in scientific notation is 4.643 x 10-4
Which of the following statements about exponents is false?
b1 = 1 |
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all of these are false |
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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).
Betty scored 88% on her final exam. If each question was worth 2 points and there were 80 possible points on the exam, how many questions did Betty answer correctly?
| 23 | |
| 24 | |
| 30 | |
| 35 |
Betty scored 88% on the test meaning she earned 88% of the possible points on the test. There were 80 possible points on the test so she earned 80 x 0.88 = 70 points. Each question is worth 2 points so she got \( \frac{70}{2} \) = 35 questions right.