| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
distributive property for division |
|
commutative property for division |
|
distributive property for multiplication |
|
commutative property for multiplication |
The distributive property for division helps in solving expressions like \({b + c \over a}\). It specifies that the result of dividing a fraction with multiple terms in the numerator and one term in the denominator can be obtained by dividing each term individually and then totaling the results: \({b + c \over a} = {b \over a} + {c \over a}\). For example, \({a^3 + 6a^2 \over a^2} = {a^3 \over a^2} + {6a^2 \over a^2} = a + 6\).
What is the distance in miles of a trip that takes 7 hours at an average speed of 50 miles per hour?
| 25 miles | |
| 55 miles | |
| 360 miles | |
| 350 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 = \( 50mph \times 7h \)
350 miles
Latoya scored 91% on her final exam. If each question was worth 4 points and there were 360 possible points on the exam, how many questions did Latoya answer correctly?
| 82 | |
| 75 | |
| 96 | |
| 69 |
Latoya scored 91% on the test meaning she earned 91% of the possible points on the test. There were 360 possible points on the test so she earned 360 x 0.91 = 328 points. Each question is worth 4 points so she got \( \frac{328}{4} \) = 82 questions right.
Which of the following is not a prime number?
5 |
|
7 |
|
2 |
|
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.
What is the least common multiple of 2 and 10?
| 19 | |
| 4 | |
| 8 | |
| 10 |
The first few multiples of 2 are [2, 4, 6, 8, 10, 12, 14, 16, 18, 20] and the first few multiples of 10 are [10, 20, 30, 40, 50, 60, 70, 80, 90]. The first few multiples they share are [10, 20, 30, 40, 50] making 10 the smallest multiple 2 and 10 have in common.