| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.25 |
| Score | 0% | 65% |
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
pairs |
|
addition |
|
division |
|
exponents |
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.)
If the base of this triangle is 5 and the height is 6, what is the area?
| 42 | |
| 15 | |
| 30 | |
| 36 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 5 x 6 = \( \frac{30}{2} \) = 15
Solve -9b - 4b = 4b + 5y + 3 for b in terms of y.
| -\(\frac{4}{5}\)y - \(\frac{2}{5}\) | |
| -\(\frac{5}{9}\)y - \(\frac{1}{3}\) | |
| -\(\frac{9}{13}\)y - \(\frac{3}{13}\) | |
| \(\frac{1}{8}\)y - 1 |
To solve this equation, isolate the variable for which you are solving (b) on one side of the equation and put everything else on the other side.
-9b - 4y = 4b + 5y + 3
-9b = 4b + 5y + 3 + 4y
-9b - 4b = 5y + 3 + 4y
-13b = 9y + 3
b = \( \frac{9y + 3}{-13} \)
b = \( \frac{9y}{-13} \) + \( \frac{3}{-13} \)
b = -\(\frac{9}{13}\)y - \(\frac{3}{13}\)
A right angle measures:
360° |
|
90° |
|
180° |
|
45° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
On this circle, a line segment connecting point A to point D is called:
circumference |
|
chord |
|
radius |
|
diameter |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).