| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.15 |
| Score | 0% | 63% |
If side x = 13cm, side y = 6cm, and side z = 12cm what is the perimeter of this triangle?
| 37cm | |
| 31cm | |
| 29cm | |
| 32cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 13cm + 6cm + 12cm = 31cm
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.
Which types of triangles will always have at least two sides of equal length?
equilateral and isosceles |
|
isosceles and right |
|
equilateral, isosceles and right |
|
equilateral and right |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
The dimensions of this cube are height (h) = 4, length (l) = 9, and width (w) = 3. What is the surface area?
| 150 | |
| 170 | |
| 270 | |
| 104 |
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 9 x 3) + (2 x 3 x 4) + (2 x 9 x 4)
sa = (54) + (24) + (72)
sa = 150
Solve for y:
3y + 6 > \( \frac{y}{7} \)
| y > -5 | |
| y > -2\(\frac{1}{10}\) | |
| y > \(\frac{36}{41}\) | |
| y > \(\frac{2}{15}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the > sign and the answer on the other.
3y + 6 > \( \frac{y}{7} \)
7 x (3y + 6) > y
(7 x 3y) + (7 x 6) > y
21y + 42 > y
21y + 42 - y > 0
21y - y > -42
20y > -42
y > \( \frac{-42}{20} \)
y > -2\(\frac{1}{10}\)