| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.17 |
| Score | 0% | 63% |
The __________ is the smallest positive integer that is a multiple of two or more integers.
least common factor |
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greatest common factor |
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least common multiple |
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absolute value |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.
What is 6a5 x 2a3?
| 12a8 | |
| 12a3 | |
| 8a5 | |
| 12a-2 |
To multiply terms with exponents, the base of both exponents must be the same. In this case they are so multiply the coefficients and add the exponents:
6a5 x 2a3
(6 x 2)a(5 + 3)
12a8
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 25% off." If Ezra buys two shirts, each with a regular price of $35, how much will he pay for both shirts?
| $36.75 | |
| $61.25 | |
| $8.75 | |
| $42.00 |
By buying two shirts, Ezra will save $35 x \( \frac{25}{100} \) = \( \frac{$35 x 25}{100} \) = \( \frac{$875}{100} \) = $8.75 on the second shirt.
So, his total cost will be
$35.00 + ($35.00 - $8.75)
$35.00 + $26.25
$61.25
Find the average of the following numbers: 12, 10, 14, 8.
| 11 | |
| 8 | |
| 16 | |
| 10 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{12 + 10 + 14 + 8}{4} \) = \( \frac{44}{4} \) = 11
A tiger in a zoo has consumed 117 pounds of food in 9 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 156 pounds?
| 5 | |
| 3 | |
| 9 | |
| 7 |
If the tiger has consumed 117 pounds of food in 9 days that's \( \frac{117}{9} \) = 13 pounds of food per day. The tiger needs to consume 156 - 117 = 39 more pounds of food to reach 156 pounds total. At 13 pounds of food per day that's \( \frac{39}{13} \) = 3 more days.