| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
commutative property for multiplication |
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distributive property for division |
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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, \({a^3 + 6a^2 \over a^2} = {a^3 \over a^2} + {6a^2 \over a^2} = a + 6\).
What is \( \frac{3}{8} \) ÷ \( \frac{1}{6} \)?
| \(\frac{2}{15}\) | |
| \(\frac{1}{49}\) | |
| 2\(\frac{1}{4}\) | |
| 18 |
To divide fractions, invert the second fraction and then multiply:
\( \frac{3}{8} \) ÷ \( \frac{1}{6} \) = \( \frac{3}{8} \) x \( \frac{6}{1} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{3}{8} \) x \( \frac{6}{1} \) = \( \frac{3 x 6}{8 x 1} \) = \( \frac{18}{8} \) = 2\(\frac{1}{4}\)
If the ratio of home fans to visiting fans in a crowd is 3:1 and all 41,000 seats in a stadium are filled, how many home fans are in attendance?
| 30,750 | |
| 35,833 | |
| 40,833 | |
| 23,250 |
A ratio of 3:1 means that there are 3 home fans for every one visiting fan. So, of every 4 fans, 3 are home fans and \( \frac{3}{4} \) of every fan in the stadium is a home fan:
41,000 fans x \( \frac{3}{4} \) = \( \frac{123000}{4} \) = 30,750 fans.
Which of the following is not an integer?
\({1 \over 2}\) |
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-1 |
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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.
4! = ?
4 x 3 |
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4 x 3 x 2 x 1 |
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5 x 4 x 3 x 2 x 1 |
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3 x 2 x 1 |
A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.