| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.77 |
| Score | 0% | 75% |
If a = 4, b = 7, c = 5, and d = 2, what is the perimeter of this quadrilateral?
| 23 | |
| 17 | |
| 28 | |
| 18 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 7 + 5 + 2
p = 18
A right angle measures:
45° |
|
360° |
|
180° |
|
90° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
First |
|
Odd |
|
Inside |
|
Last |
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 z:
z2 + 9z + 14 = 0
| 1 or -5 | |
| 2 or -2 | |
| 6 or -4 | |
| -2 or -7 |
The first step to solve a quadratic equation that's set to zero is to factor the quadratic equation:
z2 + 9z + 14 = 0
(z + 2)(z + 7) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (z + 2) or (z + 7) must equal zero:
If (z + 2) = 0, z must equal -2
If (z + 7) = 0, z must equal -7
So the solution is that z = -2 or -7
If the base of this triangle is 8 and the height is 6, what is the area?
| 105 | |
| 24 | |
| 44 | |
| 25 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 8 x 6 = \( \frac{48}{2} \) = 24