| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.86 |
| Score | 0% | 57% |
The __________ is the smallest positive integer that is a multiple of two or more integers.
greatest common factor |
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least common factor |
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least common multiple |
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absolute value |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
distributive property for multiplication |
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commutative property for multiplication |
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distributive property for division |
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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 \( \frac{3}{7} \) ÷ \( \frac{3}{8} \)?
| \(\frac{1}{12}\) | |
| 8 | |
| 1\(\frac{1}{7}\) | |
| 3\(\frac{3}{7}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{3}{7} \) ÷ \( \frac{3}{8} \) = \( \frac{3}{7} \) x \( \frac{8}{3} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{3}{7} \) x \( \frac{8}{3} \) = \( \frac{3 x 8}{7 x 3} \) = \( \frac{24}{21} \) = 1\(\frac{1}{7}\)
If the ratio of home fans to visiting fans in a crowd is 5:1 and all 50,000 seats in a stadium are filled, how many home fans are in attendance?
| 21,333 | |
| 35,250 | |
| 31,200 | |
| 41,667 |
A ratio of 5:1 means that there are 5 home fans for every one visiting fan. So, of every 6 fans, 5 are home fans and \( \frac{5}{6} \) of every fan in the stadium is a home fan:
50,000 fans x \( \frac{5}{6} \) = \( \frac{250000}{6} \) = 41,667 fans.
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 140 pounds?
| 7 | |
| 5 | |
| 6 | |
| 10 |
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 140 - 70 = 70 more pounds of food to reach 140 pounds total. At 14 pounds of food per day that's \( \frac{70}{14} \) = 5 more days.