| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.65 |
| Score | 0% | 73% |
Simplify (2a)(3ab) - (4a2)(8b).
| -26a2b | |
| 60ab2 | |
| 38ab2 | |
| 26ab2 |
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.
(2a)(3ab) - (4a2)(8b)
(2 x 3)(a x a x b) - (4 x 8)(a2 x b)
(6)(a1+1 x b) - (32)(a2b)
6a2b - 32a2b
-26a2b
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Last |
|
Inside |
|
Odd |
|
First |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses.
Which of the following expressions contains exactly two terms?
quadratic |
|
binomial |
|
polynomial |
|
monomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
The endpoints of this line segment are at (-2, 3) and (2, -9). What is the slope of this line?
| -1 | |
| -3 | |
| -\(\frac{1}{2}\) | |
| 2\(\frac{1}{2}\) |
The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, 3) and (2, -9) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-9.0) - (3.0)}{(2) - (-2)} \) = \( \frac{-12}{4} \)If a = 5, b = 6, c = 6, and d = 2, what is the perimeter of this quadrilateral?
| 19 | |
| 20 | |
| 23 | |
| 25 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 5 + 6 + 6 + 2
p = 19