| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.10 |
| Score | 0% | 62% |
What is (z4)3?
| 4z3 | |
| z12 | |
| z | |
| z-1 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(z4)3A tiger in a zoo has consumed 60 pounds of food in 5 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 120 pounds?
| 5 | |
| 4 | |
| 2 | |
| 3 |
If the tiger has consumed 60 pounds of food in 5 days that's \( \frac{60}{5} \) = 12 pounds of food per day. The tiger needs to consume 120 - 60 = 60 more pounds of food to reach 120 pounds total. At 12 pounds of food per day that's \( \frac{60}{12} \) = 5 more days.
On average, the center for a basketball team hits 40% of his shots while a guard on the same team hits 60% of his shots. If the guard takes 20 shots during a game, how many shots will the center have to take to score as many points as the guard assuming each shot is worth the same number of points?
| 41 | |
| 30 | |
| 21 | |
| 46 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 20 x \( \frac{60}{100} \) = \( \frac{60 x 20}{100} \) = \( \frac{1200}{100} \) = 12 shots
The center makes 40% of his shots so he'll have to take:
shots made = shots taken x \( \frac{\text{% made}}{100} \)
shots taken = \( \frac{\text{shots taken}}{\frac{\text{% made}}{100}} \)
to make as many shots as the guard. Plugging in values for the center gives us:
center shots taken = \( \frac{12}{\frac{40}{100}} \) = 12 x \( \frac{100}{40} \) = \( \frac{12 x 100}{40} \) = \( \frac{1200}{40} \) = 30 shots
to make the same number of shots as the guard and thus score the same number of points.
What is \( \frac{6c^5}{1c^4} \)?
| \(\frac{1}{6}\)c-1 | |
| 6c | |
| 6c20 | |
| 6c1\(\frac{1}{4}\) |
To divide terms with exponents, the base of both exponents must be the same. In this case they are so divide the coefficients and subtract the exponents:
\( \frac{6c^5}{c^4} \)
\( \frac{6}{1} \) c(5 - 4)
6c
What is 5x2 - 3x2?
| 8x4 | |
| 2x2 | |
| -2x2 | |
| -2x-2 |
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:
5x2 - 3x2
(5 - 3)x2
2x2