| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.35 |
| Score | 0% | 67% |
A tiger in a zoo has consumed 60 pounds of food in 4 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 150 pounds?
| 1 | |
| 10 | |
| 6 | |
| 4 |
If the tiger has consumed 60 pounds of food in 4 days that's \( \frac{60}{4} \) = 15 pounds of food per day. The tiger needs to consume 150 - 60 = 90 more pounds of food to reach 150 pounds total. At 15 pounds of food per day that's \( \frac{90}{15} \) = 6 more days.
a(b + c) = ab + ac defines which of the following?
commutative property for division |
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distributive property for division |
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distributive property for multiplication |
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commutative property for multiplication |
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.
If \( \left|a - 5\right| \) - 3 = -3, which of these is a possible value for a?
| -4 | |
| 5 | |
| 1 | |
| 0 |
First, solve for \( \left|a - 5\right| \):
\( \left|a - 5\right| \) - 3 = -3
\( \left|a - 5\right| \) = -3 + 3
\( \left|a - 5\right| \) = 0
The value inside the absolute value brackets can be either positive or negative so (a - 5) must equal + 0 or -0 for \( \left|a - 5\right| \) to equal 0:
| a - 5 = 0 a = 0 + 5 a = 5 | a - 5 = 0 a = 0 + 5 a = 5 |
So, a = 5 or a = 5.
Simplify \( \sqrt{125} \)
| 3\( \sqrt{5} \) | |
| 5\( \sqrt{5} \) | |
| 8\( \sqrt{10} \) | |
| 4\( \sqrt{10} \) |
To simplify a radical, factor out the perfect squares:
\( \sqrt{125} \)
\( \sqrt{25 \times 5} \)
\( \sqrt{5^2 \times 5} \)
5\( \sqrt{5} \)
How many 11-passenger vans will it take to drive all 90 members of the football team to an away game?
| 5 vans | |
| 7 vans | |
| 6 vans | |
| 9 vans |
Calculate the number of vans needed by dividing the number of people that need transported by the capacity of one van:
vans = \( \frac{90}{11} \) = 8\(\frac{2}{11}\)
So, it will take 8 full vans and one partially full van to transport the entire team making a total of 9 vans.