| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.22 |
| Score | 0% | 64% |
What is the least common multiple of 6 and 8?
| 46 | |
| 1 | |
| 35 | |
| 24 |
The first few multiples of 6 are [6, 12, 18, 24, 30, 36, 42, 48, 54, 60] and the first few multiples of 8 are [8, 16, 24, 32, 40, 48, 56, 64, 72, 80]. The first few multiples they share are [24, 48, 72, 96] making 24 the smallest multiple 6 and 8 have in common.
On average, the center for a basketball team hits 50% of his shots while a guard on the same team hits 60% of his shots. If the guard takes 10 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?
| 10 | |
| 12 | |
| 14 | |
| 15 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 10 x \( \frac{60}{100} \) = \( \frac{60 x 10}{100} \) = \( \frac{600}{100} \) = 6 shots
The center makes 50% 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 = \( \frac{6}{\frac{50}{100}} \) = 6 x \( \frac{100}{50} \) = \( \frac{6 x 100}{50} \) = \( \frac{600}{50} \) = 12 shots
to make the same number of shots as the guard and thus score the same number of points.
Damon loaned Monty $700 at an annual interest rate of 1%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $39 | |
| $30 | |
| $63 | |
| $7 |
The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:
interest = annual interest rate x loan amount
i = (\( \frac{6}{100} \)) x $700
i = 0.01 x $700
i = $7
Christine scored 77% on her final exam. If each question was worth 3 points and there were 210 possible points on the exam, how many questions did Christine answer correctly?
| 54 | |
| 42 | |
| 51 | |
| 41 |
Christine scored 77% on the test meaning she earned 77% of the possible points on the test. There were 210 possible points on the test so she earned 210 x 0.77 = 162 points. Each question is worth 3 points so she got \( \frac{162}{3} \) = 54 questions right.
What is -5y3 x 6y5?
| y5 | |
| y8 | |
| -30y-2 | |
| -30y8 |
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:
-5y3 x 6y5
(-5 x 6)y(3 + 5)
-30y8