| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
Simplify 6a x 4b.
| 24a2b2 | |
| 24\( \frac{b}{a} \) | |
| 24ab | |
| 10ab |
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.
6a x 4b = (6 x 4) (a x b) = 24ab
What is the area of a circle with a radius of 3?
| 16π | |
| 6π | |
| 9π | |
| 3π |
The formula for area is πr2:
a = πr2
a = π(32)
a = 9π
What is 5a3 - 4a3?
| 20a3 | |
| 1a3 | |
| 20a6 | |
| 9a6 |
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.
5a3 - 4a3 = 1a3
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
|
equal angle |
|
equal length |
|
parallel |
A trapezoid is a quadrilateral with one set of parallel sides.
If c = 6 and x = 9, what is the value of 6c(c - x)?
| -168 | |
| 216 | |
| -108 | |
| 200 |
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.)
6c(c - x)
6(6)(6 - 9)
6(6)(-3)
(36)(-3)
-108