| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.50 |
| Score | 0% | 70% |
Which of the following is not an integer?
1 |
|
0 |
|
\({1 \over 2}\) |
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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.
A tiger in a zoo has consumed 50 pounds of food in 5 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 100 pounds?
| 2 | |
| 8 | |
| 5 | |
| 9 |
If the tiger has consumed 50 pounds of food in 5 days that's \( \frac{50}{5} \) = 10 pounds of food per day. The tiger needs to consume 100 - 50 = 50 more pounds of food to reach 100 pounds total. At 10 pounds of food per day that's \( \frac{50}{10} \) = 5 more days.
Which of the following is a mixed number?
\({7 \over 5} \) |
|
\({a \over 5} \) |
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\(1 {2 \over 5} \) |
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\({5 \over 7} \) |
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.
This property states taht the order of addition or multiplication does not mater. For example, 2 + 5 and 5 + 2 are equivalent.
PEDMAS |
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distributive |
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commutative |
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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.
What is -7y5 - 7y5?
| 25 | |
| 5 | |
| 14y5 | |
| -14y5 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so subtract the coefficients and retain the base and exponent:
-7y5 - 7y5
(-7 - 7)y5
-14y5