| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.15 |
| Score | 0% | 63% |
What is \( 9 \)\( \sqrt{18} \) - \( 5 \)\( \sqrt{2} \)
| 4\( \sqrt{18} \) | |
| 4\( \sqrt{-5} \) | |
| 4\( \sqrt{36} \) | |
| 22\( \sqrt{2} \) |
To subtract these radicals together their radicands must be the same:
9\( \sqrt{18} \) - 5\( \sqrt{2} \)
9\( \sqrt{9 \times 2} \) - 5\( \sqrt{2} \)
9\( \sqrt{3^2 \times 2} \) - 5\( \sqrt{2} \)
(9)(3)\( \sqrt{2} \) - 5\( \sqrt{2} \)
27\( \sqrt{2} \) - 5\( \sqrt{2} \)
Now that the radicands are identical, you can subtract them:
27\( \sqrt{2} \) - 5\( \sqrt{2} \)The __________ is the greatest factor that divides two integers.
absolute value |
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greatest common factor |
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least common multiple |
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greatest common multiple |
The greatest common factor (GCF) is the greatest factor that divides two integers.
Find the average of the following numbers: 13, 7, 13, 7.
| 11 | |
| 13 | |
| 8 | |
| 10 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{13 + 7 + 13 + 7}{4} \) = \( \frac{40}{4} \) = 10
How many 6-passenger vans will it take to drive all 76 members of the football team to an away game?
| 8 vans | |
| 5 vans | |
| 13 vans | |
| 4 vans |
Calculate the number of vans needed by dividing the number of people that need transported by the capacity of one van:
vans = \( \frac{76}{6} \) = 12\(\frac{2}{3}\)
So, it will take 12 full vans and one partially full van to transport the entire team making a total of 13 vans.
| 4.9 | |
| 4.8 | |
| 1 | |
| 4.5 |
1