| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.39 |
| Score | 0% | 68% |
What is (y4)4?
| y0 | |
| 4y4 | |
| y8 | |
| y16 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(y4)4Simplify \( \sqrt{8} \)
| 9\( \sqrt{4} \) | |
| 3\( \sqrt{4} \) | |
| 2\( \sqrt{2} \) | |
| 6\( \sqrt{2} \) |
To simplify a radical, factor out the perfect squares:
\( \sqrt{8} \)
\( \sqrt{4 \times 2} \)
\( \sqrt{2^2 \times 2} \)
2\( \sqrt{2} \)
A bread recipe calls for 2\(\frac{5}{8}\) cups of flour. If you only have \(\frac{3}{4}\) cup, how much more flour is needed?
| 1\(\frac{3}{4}\) cups | |
| 2\(\frac{1}{8}\) cups | |
| 2\(\frac{1}{4}\) cups | |
| 1\(\frac{7}{8}\) cups |
The amount of flour you need is (2\(\frac{5}{8}\) - \(\frac{3}{4}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{21}{8} \) - \( \frac{6}{8} \)) cups
\( \frac{15}{8} \) cups
1\(\frac{7}{8}\) cups
This property states taht the order of addition or multiplication does not mater. For example, 2 + 5 and 5 + 2 are equivalent.
commutative |
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PEDMAS |
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distributive |
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associative |
The commutative property states that, when adding or multiplying numbers, the order in which they're added or multiplied does not matter. For example, 3 + 4 and 4 + 3 give the same result, as do 3 x 4 and 4 x 3.
Find the average of the following numbers: 15, 7, 12, 10.
| 16 | |
| 11 | |
| 13 | |
| 8 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{15 + 7 + 12 + 10}{4} \) = \( \frac{44}{4} \) = 11