| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Odd |
|
Last |
|
First |
|
Inside |
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.
Simplify (2a)(9ab) + (9a2)(8b).
| -54a2b | |
| 90a2b | |
| -54ab2 | |
| 54ab2 |
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)(9ab) + (9a2)(8b)
(2 x 9)(a x a x b) + (9 x 8)(a2 x b)
(18)(a1+1 x b) + (72)(a2b)
18a2b + 72a2b
90a2b
Simplify (6a)(3ab) - (7a2)(2b).
| -4ab2 | |
| 4a2b | |
| 81ab2 | |
| 32ab2 |
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)(3ab) - (7a2)(2b)
(6 x 3)(a x a x b) - (7 x 2)(a2 x b)
(18)(a1+1 x b) - (14)(a2b)
18a2b - 14a2b
4a2b
If c = 5 and z = 1, what is the value of 8c(c - z)?
| 35 | |
| -189 | |
| 160 | |
| 54 |
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.)
8c(c - z)
8(5)(5 - 1)
8(5)(4)
(40)(4)
160
The dimensions of this trapezoid are a = 5, b = 3, c = 7, d = 9, and h = 4. What is the area?
| 8 | |
| 34 | |
| 24 | |
| 22\(\frac{1}{2}\) |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(3 + 9)(4)
a = ½(12)(4)
a = ½(48) = \( \frac{48}{2} \)
a = 24