| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.88 |
| Score | 0% | 58% |
Christine scored 82% on her final exam. If each question was worth 2 points and there were 200 possible points on the exam, how many questions did Christine answer correctly?
| 80 | |
| 84 | |
| 82 | |
| 90 |
Christine scored 82% on the test meaning she earned 82% of the possible points on the test. There were 200 possible points on the test so she earned 200 x 0.82 = 164 points. Each question is worth 2 points so she got \( \frac{164}{2} \) = 82 questions right.
A tiger in a zoo has consumed 40 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 72 pounds?
| 4 | |
| 7 | |
| 9 | |
| 6 |
If the tiger has consumed 40 pounds of food in 5 days that's \( \frac{40}{5} \) = 8 pounds of food per day. The tiger needs to consume 72 - 40 = 32 more pounds of food to reach 72 pounds total. At 8 pounds of food per day that's \( \frac{32}{8} \) = 4 more days.
What is \( \frac{2}{6} \) ÷ \( \frac{2}{7} \)?
| \(\frac{8}{27}\) | |
| 7 | |
| \(\frac{2}{15}\) | |
| 1\(\frac{1}{6}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{2}{6} \) ÷ \( \frac{2}{7} \) = \( \frac{2}{6} \) x \( \frac{7}{2} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{2}{6} \) x \( \frac{7}{2} \) = \( \frac{2 x 7}{6 x 2} \) = \( \frac{14}{12} \) = 1\(\frac{1}{6}\)
On average, the center for a basketball team hits 35% of his shots while a guard on the same team hits 45% of his shots. If the guard takes 25 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?
| 55 | |
| 46 | |
| 20 | |
| 31 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 25 x \( \frac{45}{100} \) = \( \frac{45 x 25}{100} \) = \( \frac{1125}{100} \) = 11 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 = \( \frac{11}{\frac{35}{100}} \) = 11 x \( \frac{100}{35} \) = \( \frac{11 x 100}{35} \) = \( \frac{1100}{35} \) = 31 shots
to make the same number of shots as the guard and thus score the same number of points.
If \( \left|c + 0\right| \) - 3 = 2, which of these is a possible value for c?
| -8 | |
| 2 | |
| 8 | |
| 5 |
First, solve for \( \left|c + 0\right| \):
\( \left|c + 0\right| \) - 3 = 2
\( \left|c + 0\right| \) = 2 + 3
\( \left|c + 0\right| \) = 5
The value inside the absolute value brackets can be either positive or negative so (c + 0) must equal + 5 or -5 for \( \left|c + 0\right| \) to equal 5:
| c + 0 = 5 c = 5 + 0 c = 5 | c + 0 = -5 c = -5 + 0 c = -5 |
So, c = -5 or c = 5.