| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
What is 5a + 4a?
| a2 | |
| 9a2 | |
| 9a | |
| 20a2 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
5a + 4a = 9a
A coordinate grid is composed of which of the following?
origin |
|
y-axis |
|
all of these |
|
x-axis |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
If side x = 15cm, side y = 7cm, and side z = 14cm what is the perimeter of this triangle?
| 34cm | |
| 36cm | |
| 22cm | |
| 37cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 15cm + 7cm + 14cm = 36cm
Solve for b:
-5b - 2 < \( \frac{b}{-2} \)
| b < \(\frac{35}{48}\) | |
| b < -1\(\frac{1}{2}\) | |
| b < 1\(\frac{2}{3}\) | |
| b < -\(\frac{4}{9}\) |
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.
-5b - 2 < \( \frac{b}{-2} \)
-2 x (-5b - 2) < b
(-2 x -5b) + (-2 x -2) < b
10b + 4 < b
10b + 4 - b < 0
10b - b < -4
9b < -4
b < \( \frac{-4}{9} \)
b < -\(\frac{4}{9}\)
A trapezoid is a quadrilateral with one set of __________ sides.
equal length |
|
equal angle |
|
parallel |
|
right angle |
A trapezoid is a quadrilateral with one set of parallel sides.