| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.41 |
| Score | 0% | 68% |
The dimensions of this cube are height (h) = 7, length (l) = 8, and width (w) = 7. What is the surface area?
| 314 | |
| 58 | |
| 322 | |
| 222 |
The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):
sa = 2lw + 2wh + 2lh
sa = (2 x 8 x 7) + (2 x 7 x 7) + (2 x 8 x 7)
sa = (112) + (98) + (112)
sa = 322
Which of the following statements about a triangle is not true?
sum of interior angles = 180° |
|
perimeter = sum of side lengths |
|
area = ½bh |
|
exterior angle = sum of two adjacent interior angles |
A triangle is a three-sided polygon. It has three interior angles that add up to 180° (a + b + c = 180°). An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite (d = b + c). The perimeter of a triangle is equal to the sum of the lengths of its three sides, the height of a triangle is equal to the length from the base to the opposite vertex (angle) and the area equals one-half triangle base x height: a = ½ base x height.
What is 7a6 - 6a6?
| 42a6 | |
| 42a12 | |
| 1a6 | |
| 13a12 |
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.
7a6 - 6a6 = 1a6
Breaking apart a quadratic expression into a pair of binomials is called:
squaring |
|
normalizing |
|
deconstructing |
|
factoring |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Inside |
|
Odd |
|
First |
|
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.