| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
Simplify (y - 4)(y - 8)
| y2 + 4y - 32 | |
| y2 - 12y + 32 | |
| y2 + 12y + 32 | |
| y2 - 4y - 32 |
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 - 4)(y - 8)
(y x y) + (y x -8) + (-4 x y) + (-4 x -8)
y2 - 8y - 4y + 32
y2 - 12y + 32
The dimensions of this cube are height (h) = 8, length (l) = 8, and width (w) = 2. What is the surface area?
| 270 | |
| 150 | |
| 192 | |
| 82 |
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 2) + (2 x 2 x 8) + (2 x 8 x 8)
sa = (32) + (32) + (128)
sa = 192
Which of the following statements about a parallelogram is not true?
opposite sides and adjacent angles are equal |
|
a parallelogram is a quadrilateral |
|
the perimeter of a parallelogram is the sum of the lengths of all sides |
|
the area of a parallelogram is base x height |
A parallelogram is a quadrilateral with two sets of parallel sides. Opposite sides (a = c, b = d) and angles (red = red, blue = blue) are equal. The area of a parallelogram is base x height and the perimeter is the sum of the lengths of all sides (a + b + c + d).
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Inside |
|
Odd |
|
Last |
|
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.
The dimensions of this cylinder are height (h) = 5 and radius (r) = 8. What is the volume?
| 32π | |
| 320π | |
| 24π | |
| 144π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(82 x 5)
v = 320π