| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.21 |
| Score | 0% | 64% |
If the base of this triangle is 3 and the height is 8, what is the area?
| 12 | |
| 97\(\frac{1}{2}\) | |
| 42 | |
| 82\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 3 x 8 = \( \frac{24}{2} \) = 12
A quadrilateral is a shape with __________ sides.
5 |
|
3 |
|
2 |
|
4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
2lw x 2wh + 2lh |
|
h2 x l2 x w2 |
|
lw x wh + lh |
|
h x l x w |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.
Solve -9c + 3c = 8c + x - 1 for c in terms of x.
| x + 4 | |
| -2\(\frac{1}{3}\)x - \(\frac{5}{6}\) | |
| x + 4\(\frac{1}{2}\) | |
| \(\frac{2}{17}\)x + \(\frac{1}{17}\) |
To solve this equation, isolate the variable for which you are solving (c) on one side of the equation and put everything else on the other side.
-9c + 3x = 8c + x - 1
-9c = 8c + x - 1 - 3x
-9c - 8c = x - 1 - 3x
-17c = -2x - 1
c = \( \frac{-2x - 1}{-17} \)
c = \( \frac{-2x}{-17} \) + \( \frac{-1}{-17} \)
c = \(\frac{2}{17}\)x + \(\frac{1}{17}\)
If angle a = 35° and angle b = 51° what is the length of angle c?
| 94° | |
| 92° | |
| 100° | |
| 62° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 35° - 51° = 94°