| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.54 |
| Score | 0% | 71% |
If side x = 9cm, side y = 14cm, and side z = 14cm what is the perimeter of this triangle?
| 29cm | |
| 39cm | |
| 37cm | |
| 23cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 9cm + 14cm + 14cm = 37cm
The dimensions of this cylinder are height (h) = 9 and radius (r) = 8. What is the volume?
| 256π | |
| 8π | |
| 576π | |
| 27π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(82 x 9)
v = 576π
If a = c = 5, b = d = 3, and the blue angle = 55°, what is the area of this parallelogram?
| 15 | |
| 21 | |
| 8 | |
| 45 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 5 x 3
a = 15
Simplify (y - 3)(y + 2)
| y2 - 5y + 6 | |
| y2 + 5y + 6 | |
| y2 + y - 6 | |
| y2 - y - 6 |
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 - 3)(y + 2)
(y x y) + (y x 2) + (-3 x y) + (-3 x 2)
y2 + 2y - 3y - 6
y2 - y - 6
A(n) __________ is two expressions separated by an equal sign.
formula |
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equation |
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expression |
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problem |
An equation is two expressions separated by an equal sign. The key to solving equations is to repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.