| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.51 |
| Score | 0% | 70% |
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 20% off." If Bob buys two shirts, each with a regular price of $44, how much money will he save?
| $17.60 | |
| $6.60 | |
| $8.80 | |
| $15.40 |
By buying two shirts, Bob will save $44 x \( \frac{20}{100} \) = \( \frac{$44 x 20}{100} \) = \( \frac{$880}{100} \) = $8.80 on the second shirt.
The __________ is the greatest factor that divides two integers.
least common multiple |
|
greatest common factor |
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absolute value |
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greatest common multiple |
The greatest common factor (GCF) is the greatest factor that divides two integers.
A factor is a positive __________ that divides evenly into a given number.
integer |
|
improper fraction |
|
fraction |
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mixed number |
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 8a3 + 6a3?
| 2a3 | |
| 14a3 | |
| -2a3 | |
| 14a6 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so add the coefficients and retain the base and exponent:
8a3 + 6a3
(8 + 6)a3
14a3
A triathlon course includes a 500m swim, a 50.5km bike ride, and a 15.100000000000001km run. What is the total length of the race course?
| 66.1km | |
| 50.9km | |
| 38.8km | |
| 30.9km |
To add these distances, they must share the same unit so first you need to first convert the swim distance from meters (m) to kilometers (km) before adding it to the bike and run distances which are already in km. To convert 500 meters to kilometers, divide the distance by 1000 to get 0.5km then add the remaining distances:
total distance = swim + bike + run
total distance = 0.5km + 50.5km + 15.100000000000001km
total distance = 66.1km