| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.98 |
| Score | 0% | 60% |
Monty loaned Charlie $800 at an annual interest rate of 8%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $18 | |
| $24 | |
| $11 | |
| $64 |
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 $800
i = 0.08 x $800
i = $64
A triathlon course includes a 500m swim, a 50.5km bike ride, and a 6.1km run. What is the total length of the race course?
| 29.2km | |
| 57.1km | |
| 36.7km | |
| 51.4km |
To add these distances, they must share the same unit so first you need to first convert the swim distance from meters (m) to kilometers (km) before adding it to the bike and run distances which are already in km. To convert 500 meters to kilometers, divide the distance by 1000 to get 0.5km then add the remaining distances:
total distance = swim + bike + run
total distance = 0.5km + 50.5km + 6.1km
total distance = 57.1km
On average, the center for a basketball team hits 25% of his shots while a guard on the same team hits 45% 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?
| 24 | |
| 17 | |
| 36 | |
| 29 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 20 x \( \frac{45}{100} \) = \( \frac{45 x 20}{100} \) = \( \frac{900}{100} \) = 9 shots
The center makes 25% 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 = \( \frac{9}{\frac{25}{100}} \) = 9 x \( \frac{100}{25} \) = \( \frac{9 x 100}{25} \) = \( \frac{900}{25} \) = 36 shots
to make the same number of shots as the guard and thus score the same number of points.
What is \( \frac{9x^6}{6x^3} \)?
| 1\(\frac{1}{2}\)x\(\frac{1}{2}\) | |
| 1\(\frac{1}{2}\)x3 | |
| 1\(\frac{1}{2}\)x-3 | |
| 1\(\frac{1}{2}\)x18 |
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:
\( \frac{9x^6}{6x^3} \)
\( \frac{9}{6} \) x(6 - 3)
1\(\frac{1}{2}\)x3
| 1.6 | |
| 7.0 | |
| 1 | |
| 2.7 |
1