| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
Solve for x:
-7x + 1 = -6 + x
| -3 | |
| -1\(\frac{1}{5}\) | |
| -\(\frac{5}{7}\) | |
| \(\frac{7}{8}\) |
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.
-7x + 1 = -6 + x
-7x = -6 + x - 1
-7x - x = -6 - 1
-8x = -7
x = \( \frac{-7}{-8} \)
x = \(\frac{7}{8}\)
If a = c = 3, b = d = 6, and the blue angle = 68°, what is the area of this parallelogram?
| 56 | |
| 45 | |
| 18 | |
| 8 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 3 x 6
a = 18
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
division |
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addition |
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exponents |
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pairs |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
The dimensions of this trapezoid are a = 4, b = 4, c = 6, d = 4, and h = 3. What is the area?
| 9 | |
| 32\(\frac{1}{2}\) | |
| 12 | |
| 35 |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(4 + 4)(3)
a = ½(8)(3)
a = ½(24) = \( \frac{24}{2} \)
a = 12
A coordinate grid is composed of which of the following?
y-axis |
|
all of these |
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x-axis |
|
origin |
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.