| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.09 |
| Score | 0% | 62% |
Simplify (y - 9)(y - 6)
| y2 - 15y + 54 | |
| y2 - 3y - 54 | |
| y2 + 15y + 54 | |
| y2 + 3y - 54 |
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:
(y - 9)(y - 6)
(y x y) + (y x -6) + (-9 x y) + (-9 x -6)
y2 - 6y - 9y + 54
y2 - 15y + 54
Simplify (8a)(2ab) - (2a2)(3b).
| 10a2b | |
| 22ab2 | |
| 50a2b | |
| 50ab2 |
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.
(8a)(2ab) - (2a2)(3b)
(8 x 2)(a x a x b) - (2 x 3)(a2 x b)
(16)(a1+1 x b) - (6)(a2b)
16a2b - 6a2b
10a2b
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
First |
|
Last |
|
Inside |
|
Odd |
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.
Solve for b:
-2b - 8 > \( \frac{b}{2} \)
| b > -\(\frac{42}{55}\) | |
| b > \(\frac{35}{48}\) | |
| b > -3\(\frac{1}{5}\) | |
| b > -\(\frac{5}{8}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the > sign and the answer on the other.
-2b - 8 > \( \frac{b}{2} \)
2 x (-2b - 8) > b
(2 x -2b) + (2 x -8) > b
-4b - 16 > b
-4b - 16 - b > 0
-4b - b > 16
-5b > 16
b > \( \frac{16}{-5} \)
b > -3\(\frac{1}{5}\)
The dimensions of this trapezoid are a = 5, b = 6, c = 6, d = 5, and h = 3. What is the area?
| 16\(\frac{1}{2}\) | |
| 28 | |
| 24 | |
| 18 |
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(6 + 5)(3)
a = ½(11)(3)
a = ½(33) = \( \frac{33}{2} \)
a = 16\(\frac{1}{2}\)