| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
What is \( 7 \)\( \sqrt{50} \) + \( 2 \)\( \sqrt{2} \)
| 9\( \sqrt{25} \) | |
| 9\( \sqrt{100} \) | |
| 37\( \sqrt{2} \) | |
| 14\( \sqrt{100} \) |
To add these radicals together their radicands must be the same:
7\( \sqrt{50} \) + 2\( \sqrt{2} \)
7\( \sqrt{25 \times 2} \) + 2\( \sqrt{2} \)
7\( \sqrt{5^2 \times 2} \) + 2\( \sqrt{2} \)
(7)(5)\( \sqrt{2} \) + 2\( \sqrt{2} \)
35\( \sqrt{2} \) + 2\( \sqrt{2} \)
Now that the radicands are identical, you can add them together:
35\( \sqrt{2} \) + 2\( \sqrt{2} \)Which of the following is an improper fraction?
\(1 {2 \over 5} \) |
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\({2 \over 5} \) |
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\({a \over 5} \) |
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\({7 \over 5} \) |
A rational number (or fraction) is represented as a ratio between two integers, a and b, and has the form \({a \over b}\) where a is the numerator and b is the denominator. An improper fraction (\({5 \over 3} \)) has a numerator with a greater absolute value than the denominator and can be converted into a mixed number (\(1 {2 \over 3} \)) which has a whole number part and a fractional part.
The __________ is the greatest factor that divides two integers.
greatest common multiple |
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absolute value |
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greatest common factor |
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least common multiple |
The greatest common factor (GCF) is the greatest factor that divides two integers.
A factor is a positive __________ that divides evenly into a given number.
mixed number |
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integer |
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fraction |
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improper fraction |
A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.
Which of the following is not an integer?
1 |
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\({1 \over 2}\) |
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0 |
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-1 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.