| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.53 |
| Score | 0% | 71% |
What is \( \frac{2}{5} \) x \( \frac{2}{7} \)?
| \(\frac{4}{7}\) | |
| \(\frac{4}{45}\) | |
| \(\frac{1}{12}\) | |
| \(\frac{4}{35}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{2}{5} \) x \( \frac{2}{7} \) = \( \frac{2 x 2}{5 x 7} \) = \( \frac{4}{35} \) = \(\frac{4}{35}\)
The __________ is the greatest factor that divides two integers.
absolute value |
|
least common multiple |
|
greatest common multiple |
|
greatest common factor |
The greatest common factor (GCF) is the greatest factor that divides two integers.
| 4.0 | |
| 1 | |
| 4.8 | |
| 7.0 |
1
If a car travels 440 miles in 8 hours, what is the average speed?
| 75 mph | |
| 65 mph | |
| 35 mph | |
| 55 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)What is -2b2 x 9b5?
| -18b5 | |
| -18b7 | |
| 7b10 | |
| -18b10 |
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:
-2b2 x 9b5
(-2 x 9)b(2 + 5)
-18b7