| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
A tiger in a zoo has consumed 72 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 112 pounds?
| 7 | |
| 3 | |
| 5 | |
| 2 |
If the tiger has consumed 72 pounds of food in 9 days that's \( \frac{72}{9} \) = 8 pounds of food per day. The tiger needs to consume 112 - 72 = 40 more pounds of food to reach 112 pounds total. At 8 pounds of food per day that's \( \frac{40}{8} \) = 5 more days.
On average, the center for a basketball team hits 35% of his shots while a guard on the same team hits 55% of his shots. If the guard takes 15 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?
| 23 | |
| 18 | |
| 20 | |
| 15 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 15 x \( \frac{55}{100} \) = \( \frac{55 x 15}{100} \) = \( \frac{825}{100} \) = 8 shots
The center makes 35% 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 = \( \frac{8}{\frac{35}{100}} \) = 8 x \( \frac{100}{35} \) = \( \frac{8 x 100}{35} \) = \( \frac{800}{35} \) = 23 shots
to make the same number of shots as the guard and thus score the same number of points.
What is -x7 + 9x7?
| -10x-7 | |
| 8x-14 | |
| 8x7 | |
| 10x-7 |
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:
-1x7 + 9x7
(-1 + 9)x7
8x7
What is \( \frac{3}{7} \) ÷ \( \frac{2}{9} \)?
| 1\(\frac{13}{14}\) | |
| \(\frac{2}{35}\) | |
| \(\frac{1}{12}\) | |
| \(\frac{1}{4}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{3}{7} \) ÷ \( \frac{2}{9} \) = \( \frac{3}{7} \) x \( \frac{9}{2} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{3}{7} \) x \( \frac{9}{2} \) = \( \frac{3 x 9}{7 x 2} \) = \( \frac{27}{14} \) = 1\(\frac{13}{14}\)
4! = ?
5 x 4 x 3 x 2 x 1 |
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4 x 3 x 2 x 1 |
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4 x 3 |
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3 x 2 x 1 |
A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.