| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.23 |
| Score | 0% | 65% |
On average, the center for a basketball team hits 40% of his shots while a guard on the same team hits 50% 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?
| 36 | |
| 20 | |
| 37 | |
| 25 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 20 x \( \frac{50}{100} \) = \( \frac{50 x 20}{100} \) = \( \frac{1000}{100} \) = 10 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 = \( \frac{10}{\frac{40}{100}} \) = 10 x \( \frac{100}{40} \) = \( \frac{10 x 100}{40} \) = \( \frac{1000}{40} \) = 25 shots
to make the same number of shots as the guard and thus score the same number of points.
What is the distance in miles of a trip that takes 1 hour at an average speed of 55 miles per hour?
| 350 miles | |
| 60 miles | |
| 195 miles | |
| 55 miles |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for distance:
distance = \( \text{speed} \times \text{time} \)
distance = \( 55mph \times 1h \)
55 miles
What is -9z6 x 3z7?
| -27z6 | |
| -27z13 | |
| -27z42 | |
| -6z13 |
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:
-9z6 x 3z7
(-9 x 3)z(6 + 7)
-27z13
Solve 4 + (3 + 3) ÷ 2 x 3 - 42
| 1\(\frac{1}{3}\) | |
| \(\frac{8}{9}\) | |
| -3 | |
| 1\(\frac{3}{5}\) |
Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):
4 + (3 + 3) ÷ 2 x 3 - 42
P: 4 + (6) ÷ 2 x 3 - 42
E: 4 + 6 ÷ 2 x 3 - 16
MD: 4 + \( \frac{6}{2} \) x 3 - 16
MD: 4 + \( \frac{18}{2} \) - 16
AS: \( \frac{8}{2} \) + \( \frac{18}{2} \) - 16
AS: \( \frac{26}{2} \) - 16
AS: \( \frac{26 - 32}{2} \)
\( \frac{-6}{2} \)
-3
The __________ is the greatest factor that divides two integers.
greatest common factor |
|
least common multiple |
|
greatest common multiple |
|
absolute value |
The greatest common factor (GCF) is the greatest factor that divides two integers.