| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.94 |
| Score | 0% | 59% |
If the base of this triangle is 7 and the height is 8, what is the area?
| 28 | |
| 75 | |
| 45 | |
| 27 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 7 x 8 = \( \frac{56}{2} \) = 28
Which types of triangles will always have at least two sides of equal length?
equilateral and isosceles |
|
isosceles and right |
|
equilateral and right |
|
equilateral, isosceles 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) = 7, length (l) = 1, and width (w) = 1. What is the surface area?
| 102 | |
| 210 | |
| 62 | |
| 30 |
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 1 x 1) + (2 x 1 x 7) + (2 x 1 x 7)
sa = (2) + (14) + (14)
sa = 30
If AD = 25 and BD = 24, AB = ?
| 15 | |
| 1 | |
| 20 | |
| 19 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDSolve for x:
-2x - 4 < 4 - 8x
| x < 5 | |
| x < 1\(\frac{1}{3}\) | |
| x < -1 | |
| x < -6 |
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.
-2x - 4 < 4 - 8x
-2x < 4 - 8x + 4
-2x + 8x < 4 + 4
6x < 8
x < \( \frac{8}{6} \)
x < 1\(\frac{1}{3}\)