| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
Simplify \( \frac{36}{60} \).
| \( \frac{9}{13} \) | |
| \( \frac{5}{13} \) | |
| \( \frac{7}{12} \) | |
| \( \frac{3}{5} \) |
To simplify this fraction, first find the greatest common factor between them. The factors of 36 are [1, 2, 3, 4, 6, 9, 12, 18, 36] and the factors of 60 are [1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60]. They share 6 factors [1, 2, 3, 4, 6, 12] making 12 their greatest common factor (GCF).
Next, divide both numerator and denominator by the GCF:
\( \frac{36}{60} \) = \( \frac{\frac{36}{12}}{\frac{60}{12}} \) = \( \frac{3}{5} \)
Which of these numbers is a factor of 36?
| 27 | |
| 9 | |
| 29 | |
| 16 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36.
What is \( \frac{5}{2} \) - \( \frac{5}{10} \)?
| 2 | |
| 1 \( \frac{5}{8} \) | |
| 2 \( \frac{2}{6} \) | |
| \( \frac{3}{6} \) |
To subtract these fractions, first find the lowest common multiple of their denominators. 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 share.
Next, convert the fractions so each denominator equals the lowest common multiple:
\( \frac{5 x 5}{2 x 5} \) - \( \frac{5 x 1}{10 x 1} \)
\( \frac{25}{10} \) - \( \frac{5}{10} \)
Now, because the fractions share a common denominator, you can subtract them:
\( \frac{25 - 5}{10} \) = \( \frac{20}{10} \) = 2
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
commutative property for division |
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distributive property for multiplication |
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distributive property for division |
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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 \( \sqrt{\frac{36}{9}} \)?
| 2\(\frac{2}{3}\) | |
| 1\(\frac{1}{4}\) | |
| 2 | |
| 1\(\frac{4}{5}\) |
To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:
\( \sqrt{\frac{36}{9}} \)
\( \frac{\sqrt{36}}{\sqrt{9}} \)
\( \frac{\sqrt{6^2}}{\sqrt{3^2}} \)
\( \frac{6}{3} \)
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