| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.90 |
| Score | 0% | 58% |
What is \( 6 \)\( \sqrt{80} \) + \( 3 \)\( \sqrt{5} \)
| 18\( \sqrt{16} \) | |
| 27\( \sqrt{5} \) | |
| 18\( \sqrt{80} \) | |
| 9\( \sqrt{400} \) |
To add these radicals together their radicands must be the same:
6\( \sqrt{80} \) + 3\( \sqrt{5} \)
6\( \sqrt{16 \times 5} \) + 3\( \sqrt{5} \)
6\( \sqrt{4^2 \times 5} \) + 3\( \sqrt{5} \)
(6)(4)\( \sqrt{5} \) + 3\( \sqrt{5} \)
24\( \sqrt{5} \) + 3\( \sqrt{5} \)
Now that the radicands are identical, you can add them together:
24\( \sqrt{5} \) + 3\( \sqrt{5} \)How many 15-passenger vans will it take to drive all 52 members of the football team to an away game?
| 7 vans | |
| 6 vans | |
| 4 vans | |
| 12 vans |
Calculate the number of vans needed by dividing the number of people that need transported by the capacity of one van:
vans = \( \frac{52}{15} \) = 3\(\frac{7}{15}\)
So, it will take 3 full vans and one partially full van to transport the entire team making a total of 4 vans.
Which of the following statements about exponents is false?
b1 = b |
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b1 = 1 |
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b0 = 1 |
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all of these are false |
A number with an exponent (be) consists of a base (b) raised to a power (e). The exponent indicates the number of times that the base is multiplied by itself. A base with an exponent of 1 equals the base (b1 = b) and a base with an exponent of 0 equals 1 ( (b0 = 1).
Monty loaned Roger $1,000 at an annual interest rate of 1%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $10 | |
| $112 | |
| $15 | |
| $13 |
The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:
interest = annual interest rate x loan amount
i = (\( \frac{6}{100} \)) x $1,000
i = 0.01 x $1,000
i = $10
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
distributive property for division |
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commutative property for division |
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distributive property for multiplication |
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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, \({a^3 + 6a^2 \over a^2} = {a^3 \over a^2} + {6a^2 \over a^2} = a + 6\).