| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
Solve 3 + (5 + 4) ÷ 3 x 5 - 52
| \(\frac{3}{8}\) | |
| -7 | |
| \(\frac{5}{9}\) | |
| \(\frac{5}{8}\) |
Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):
3 + (5 + 4) ÷ 3 x 5 - 52
P: 3 + (9) ÷ 3 x 5 - 52
E: 3 + 9 ÷ 3 x 5 - 25
MD: 3 + \( \frac{9}{3} \) x 5 - 25
MD: 3 + \( \frac{45}{3} \) - 25
AS: \( \frac{9}{3} \) + \( \frac{45}{3} \) - 25
AS: \( \frac{54}{3} \) - 25
AS: \( \frac{54 - 75}{3} \)
\( \frac{-21}{3} \)
-7
A bread recipe calls for 3\(\frac{5}{8}\) cups of flour. If you only have 1\(\frac{1}{2}\) cups, how much more flour is needed?
| 3\(\frac{3}{8}\) cups | |
| 1\(\frac{5}{8}\) cups | |
| \(\frac{7}{8}\) cups | |
| 2\(\frac{1}{8}\) cups |
The amount of flour you need is (3\(\frac{5}{8}\) - 1\(\frac{1}{2}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{29}{8} \) - \( \frac{12}{8} \)) cups
\( \frac{17}{8} \) cups
2\(\frac{1}{8}\) cups
How many hours does it take a car to travel 330 miles at an average speed of 55 miles per hour?
| 1 hour | |
| 6 hours | |
| 3 hours | |
| 8 hours |
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 time:
time = \( \frac{\text{distance}}{\text{speed}} \)
time = \( \frac{330mi}{55mph} \)
6 hours
Convert c-3 to remove the negative exponent.
| \( \frac{1}{c^3} \) | |
| \( \frac{1}{c^{-3}} \) | |
| \( \frac{-1}{c^{-3}} \) | |
| \( \frac{-1}{-3c} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
Which of the following is not a prime number?
2 |
|
7 |
|
5 |
|
9 |
A prime number is an integer greater than 1 that has no factors other than 1 and itself. Examples of prime numbers include 2, 3, 5, 7, and 11.