| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.90 |
| Score | 0% | 78% |
Simplify 7a x 4b.
| 11ab | |
| 28\( \frac{b}{a} \) | |
| 28\( \frac{a}{b} \) | |
| 28ab |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
7a x 4b = (7 x 4) (a x b) = 28ab
A trapezoid is a quadrilateral with one set of __________ sides.
equal angle |
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equal length |
|
right angle |
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parallel |
A trapezoid is a quadrilateral with one set of parallel sides.
If a = -6 and y = 5, what is the value of a(a - y)?
| 48 | |
| 66 | |
| 4 | |
| -72 |
To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
a(a - y)
1(-6)(-6 - 5)
1(-6)(-11)
(-6)(-11)
66
A coordinate grid is composed of which of the following?
all of these |
|
y-axis |
|
x-axis |
|
origin |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
What is 5a - 9a?
| a2 | |
| -4a | |
| -4a2 | |
| -4 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
5a - 9a = -4a