| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 30% off." If Bob buys two shirts, each with a regular price of $17, how much will he pay for both shirts?
| $11.90 | |
| $22.95 | |
| $5.10 | |
| $28.90 |
By buying two shirts, Bob will save $17 x \( \frac{30}{100} \) = \( \frac{$17 x 30}{100} \) = \( \frac{$510}{100} \) = $5.10 on the second shirt.
So, his total cost will be
$17.00 + ($17.00 - $5.10)
$17.00 + $11.90
$28.90
On average, the center for a basketball team hits 45% of his shots while a guard on the same team hits 50% of his shots. If the guard takes 30 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?
| 47 | |
| 33 | |
| 63 | |
| 38 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 30 x \( \frac{50}{100} \) = \( \frac{50 x 30}{100} \) = \( \frac{1500}{100} \) = 15 shots
The center makes 45% 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 = \( \frac{15}{\frac{45}{100}} \) = 15 x \( \frac{100}{45} \) = \( \frac{15 x 100}{45} \) = \( \frac{1500}{45} \) = 33 shots
to make the same number of shots as the guard and thus score the same number of points.
The __________ is the greatest factor that divides two integers.
absolute value |
|
greatest common factor |
|
greatest common multiple |
|
least common multiple |
The greatest common factor (GCF) is the greatest factor that divides two integers.
What is \( \frac{5x^8}{6x^2} \)?
| \(\frac{5}{6}\)x-6 | |
| \(\frac{5}{6}\)x10 | |
| \(\frac{5}{6}\)x4 | |
| \(\frac{5}{6}\)x6 |
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:
\( \frac{5x^8}{6x^2} \)
\( \frac{5}{6} \) x(8 - 2)
\(\frac{5}{6}\)x6
If a car travels 160 miles in 4 hours, what is the average speed?
| 60 mph | |
| 70 mph | |
| 40 mph | |
| 30 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)