| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.26 |
| Score | 0% | 65% |
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
distributive property for division |
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commutative property for multiplication |
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commutative property for division |
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distributive 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, \({a^3 + 6a^2 \over a^2} = {a^3 \over a^2} + {6a^2 \over a^2} = a + 6\).
If \( \left|b - 6\right| \) + 3 = -5, which of these is a possible value for b?
| 11 | |
| 6 | |
| 3 | |
| 14 |
First, solve for \( \left|b - 6\right| \):
\( \left|b - 6\right| \) + 3 = -5
\( \left|b - 6\right| \) = -5 - 3
\( \left|b - 6\right| \) = -8
The value inside the absolute value brackets can be either positive or negative so (b - 6) must equal - 8 or --8 for \( \left|b - 6\right| \) to equal -8:
| b - 6 = -8 b = -8 + 6 b = -2 | b - 6 = 8 b = 8 + 6 b = 14 |
So, b = 14 or b = -2.
What is \( \frac{2}{6} \) x \( \frac{4}{5} \)?
| 1\(\frac{1}{3}\) | |
| \(\frac{12}{35}\) | |
| \(\frac{4}{15}\) | |
| \(\frac{2}{15}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{2}{6} \) x \( \frac{4}{5} \) = \( \frac{2 x 4}{6 x 5} \) = \( \frac{8}{30} \) = \(\frac{4}{15}\)
A tiger in a zoo has consumed 70 pounds of food in 5 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 154 pounds?
| 9 | |
| 10 | |
| 6 | |
| 1 |
If the tiger has consumed 70 pounds of food in 5 days that's \( \frac{70}{5} \) = 14 pounds of food per day. The tiger needs to consume 154 - 70 = 84 more pounds of food to reach 154 pounds total. At 14 pounds of food per day that's \( \frac{84}{14} \) = 6 more days.
Which of the following is not an integer?
-1 |
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\({1 \over 2}\) |
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1 |
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0 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.