| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.79 |
| Score | 0% | 56% |
Solve for y:
y - 9 < 8 + 8y
| y < -2\(\frac{3}{7}\) | |
| y < -\(\frac{3}{4}\) | |
| y < \(\frac{7}{9}\) | |
| y < 1 |
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.
y - 9 < 8 + 8y
y < 8 + 8y + 9
y - 8y < 8 + 9
-7y < 17
y < \( \frac{17}{-7} \)
y < -2\(\frac{3}{7}\)
If a = c = 5, b = d = 6, and the blue angle = 67°, what is the area of this parallelogram?
| 15 | |
| 30 | |
| 63 | |
| 48 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 5 x 6
a = 30
If the base of this triangle is 2 and the height is 1, what is the area?
| 12\(\frac{1}{2}\) | |
| 17\(\frac{1}{2}\) | |
| 35 | |
| 1 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 2 x 1 = \( \frac{2}{2} \) = 1
Which types of triangles will always have at least two sides of equal length?
equilateral, isosceles and right |
|
equilateral and right |
|
equilateral and isosceles |
|
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.
Solve for x:
3x - 3 = \( \frac{x}{-8} \)
| \(\frac{24}{25}\) | |
| \(\frac{27}{82}\) | |
| 10\(\frac{1}{8}\) | |
| -\(\frac{8}{13}\) |
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 equal sign and the answer on the other.
3x - 3 = \( \frac{x}{-8} \)
-8 x (3x - 3) = x
(-8 x 3x) + (-8 x -3) = x
-24x + 24 = x
-24x + 24 - x = 0
-24x - x = -24
-25x = -24
x = \( \frac{-24}{-25} \)
x = \(\frac{24}{25}\)