| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.65 |
| Score | 0% | 53% |
The __________ is the smallest positive integer that is a multiple of two or more integers.
least common multiple |
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greatest common factor |
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absolute value |
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least common factor |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.
On average, the center for a basketball team hits 50% of his shots while a guard on the same team hits 70% of his shots. If the guard takes 10 shots during a game, how many shots will the center have to take to score as many points as the guard assuming each shot is worth the same number of points?
| 14 | |
| 13 | |
| 18 | |
| 15 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 10 x \( \frac{70}{100} \) = \( \frac{70 x 10}{100} \) = \( \frac{700}{100} \) = 7 shots
The center makes 50% of his shots so he'll have to take:
shots made = shots taken x \( \frac{\text{% made}}{100} \)
shots taken = \( \frac{\text{shots taken}}{\frac{\text{% made}}{100}} \)
to make as many shots as the guard. Plugging in values for the center gives us:
center shots taken = \( \frac{7}{\frac{50}{100}} \) = 7 x \( \frac{100}{50} \) = \( \frac{7 x 100}{50} \) = \( \frac{700}{50} \) = 14 shots
to make the same number of shots as the guard and thus score the same number of points.
Solve 2 + (4 + 2) ÷ 3 x 5 - 42
| \(\frac{1}{3}\) | |
| 1 | |
| -4 | |
| 1\(\frac{1}{2}\) |
Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):
2 + (4 + 2) ÷ 3 x 5 - 42
P: 2 + (6) ÷ 3 x 5 - 42
E: 2 + 6 ÷ 3 x 5 - 16
MD: 2 + \( \frac{6}{3} \) x 5 - 16
MD: 2 + \( \frac{30}{3} \) - 16
AS: \( \frac{6}{3} \) + \( \frac{30}{3} \) - 16
AS: \( \frac{36}{3} \) - 16
AS: \( \frac{36 - 48}{3} \)
\( \frac{-12}{3} \)
-4
What is 6\( \sqrt{8} \) x 7\( \sqrt{3} \)?
| 13\( \sqrt{24} \) | |
| 84\( \sqrt{6} \) | |
| 42\( \sqrt{11} \) | |
| 13\( \sqrt{8} \) |
To multiply terms with radicals, multiply the coefficients and radicands separately:
6\( \sqrt{8} \) x 7\( \sqrt{3} \)
(6 x 7)\( \sqrt{8 \times 3} \)
42\( \sqrt{24} \)
Now we need to simplify the radical:
42\( \sqrt{24} \)
42\( \sqrt{6 \times 4} \)
42\( \sqrt{6 \times 2^2} \)
(42)(2)\( \sqrt{6} \)
84\( \sqrt{6} \)
Which of the following is an improper fraction?
\({7 \over 5} \) |
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\({2 \over 5} \) |
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\({a \over 5} \) |
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\(1 {2 \over 5} \) |
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.