| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.72 |
| Score | 0% | 74% |
Simplify \( \frac{36}{44} \).
| \( \frac{8}{11} \) | |
| \( \frac{4}{17} \) | |
| \( \frac{7}{20} \) | |
| \( \frac{9}{11} \) |
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 44 are [1, 2, 4, 11, 22, 44]. They share 3 factors [1, 2, 4] making 4 their greatest common factor (GCF).
Next, divide both numerator and denominator by the GCF:
\( \frac{36}{44} \) = \( \frac{\frac{36}{4}}{\frac{44}{4}} \) = \( \frac{9}{11} \)
What is the distance in miles of a trip that takes 3 hours at an average speed of 55 miles per hour?
| 195 miles | |
| 165 miles | |
| 220 miles | |
| 70 miles |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for distance:
distance = \( \text{speed} \times \text{time} \)
distance = \( 55mph \times 3h \)
165 miles
a(b + c) = ab + ac 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 multiplication helps in solving expressions like a(b + c). It specifies that the result of multiplying one number by the sum or difference of two numbers can be obtained by multiplying each number individually and then totaling the results: a(b + c) = ab + ac. For example, 4(10-5) = (4 x 10) - (4 x 5) = 40 - 20 = 20.
Convert c-3 to remove the negative exponent.
| \( \frac{3}{c} \) | |
| \( \frac{1}{c^{-3}} \) | |
| \( \frac{1}{c^3} \) | |
| \( \frac{-1}{c^{-3}} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
The __________ is the greatest factor that divides two integers.
absolute value |
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greatest common factor |
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greatest common multiple |
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least common multiple |
The greatest common factor (GCF) is the greatest factor that divides two integers.