| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.71 |
| Score | 0% | 74% |
Convert y-4 to remove the negative exponent.
| \( \frac{-1}{-4y^{4}} \) | |
| \( \frac{1}{y^4} \) | |
| \( \frac{-4}{-y} \) | |
| \( \frac{4}{y} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
What is the distance in miles of a trip that takes 7 hours at an average speed of 40 miles per hour?
| 60 miles | |
| 25 miles | |
| 200 miles | |
| 280 miles |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for distance:
distance = \( \text{speed} \times \text{time} \)
distance = \( 40mph \times 7h \)
280 miles
What is 4c2 - 7c2?
| 11c4 | |
| -3c2 | |
| 11c-4 | |
| 3c2 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so subtract the coefficients and retain the base and exponent:
4c2 - 7c2
(4 - 7)c2
-3c2
What is (c4)4?
| c16 | |
| c8 | |
| 4c4 | |
| c0 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(c4)4Which of these numbers is a factor of 36?
| 6 | |
| 34 | |
| 10 | |
| 9 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36.