| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.10 |
| Score | 0% | 62% |
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| 2.4 | |
| 1 | |
| 2.0 |
1
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
distributive property for division |
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commutative property for multiplication |
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distributive property for multiplication |
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commutative property for division |
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, \({a^3 + 6a^2 \over a^2} = {a^3 \over a^2} + {6a^2 \over a^2} = a + 6\).
25 members of a bridal party need transported to a wedding reception but there are only 4 5-passenger taxis available to take them. How many will need to find other transportation?
| 5 | |
| 3 | |
| 9 | |
| 2 |
There are 4 5-passenger taxis available so that's 4 x 5 = 20 total seats. There are 25 people needing transportation leaving 25 - 20 = 5 who will have to find other transportation.
What is \( \frac{1}{5} \) ÷ \( \frac{4}{8} \)?
| \(\frac{8}{15}\) | |
| \(\frac{2}{5}\) | |
| 2 | |
| \(\frac{2}{81}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{1}{5} \) ÷ \( \frac{4}{8} \) = \( \frac{1}{5} \) x \( \frac{8}{4} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{1}{5} \) x \( \frac{8}{4} \) = \( \frac{1 x 8}{5 x 4} \) = \( \frac{8}{20} \) = \(\frac{2}{5}\)
A tiger in a zoo has consumed 40 pounds of food in 4 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 110 pounds?
| 10 | |
| 2 | |
| 7 | |
| 9 |
If the tiger has consumed 40 pounds of food in 4 days that's \( \frac{40}{4} \) = 10 pounds of food per day. The tiger needs to consume 110 - 40 = 70 more pounds of food to reach 110 pounds total. At 10 pounds of food per day that's \( \frac{70}{10} \) = 7 more days.