| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
What is the circumference of a circle with a diameter of 4?
| 2π | |
| 14π | |
| 4π | |
| 18π |
The formula for circumference is circle diameter x π:
c = πd
c = 4π
Simplify (y - 8)(y + 5)
| y2 - 13y + 40 | |
| y2 + 3y - 40 | |
| y2 + 13y + 40 | |
| y2 - 3y - 40 |
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 - 8)(y + 5)
(y x y) + (y x 5) + (-8 x y) + (-8 x 5)
y2 + 5y - 8y - 40
y2 - 3y - 40
The dimensions of this cylinder are height (h) = 1 and radius (r) = 2. What is the surface area?
| 160π | |
| 168π | |
| 40π | |
| 12π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(22) + 2π(2 x 1)
sa = 2π(4) + 2π(2)
sa = (2 x 4)π + (2 x 2)π
sa = 8π + 4π
sa = 12π
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Odd |
|
Last |
|
Inside |
|
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.
If a = c = 6, b = d = 5, and the blue angle = 76°, what is the area of this parallelogram?
| 20 | |
| 24 | |
| 30 | |
| 54 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 6 x 5
a = 30