| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.15 |
| Score | 0% | 63% |
Simplify 6a x 4b.
| 24\( \frac{a}{b} \) | |
| 24a2b2 | |
| 10ab | |
| 24ab |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
6a x 4b = (6 x 4) (a x b) = 24ab
On this circle, line segment AB is the:
circumference |
|
chord |
|
diameter |
|
radius |
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).
If a = c = 5, b = d = 9, and the blue angle = 57°, what is the area of this parallelogram?
| 45 | |
| 35 | |
| 16 | |
| 20 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 5 x 9
a = 45
Solve 2a + 3a = -7a + x - 9 for a in terms of x.
| 1\(\frac{1}{3}\)x + \(\frac{1}{3}\) | |
| -\(\frac{2}{5}\)x + 1 | |
| -\(\frac{2}{9}\)x - 1 | |
| x + 2\(\frac{1}{3}\) |
To solve this equation, isolate the variable for which you are solving (a) on one side of the equation and put everything else on the other side.
2a + 3x = -7a + x - 9
2a = -7a + x - 9 - 3x
2a + 7a = x - 9 - 3x
9a = -2x - 9
a = \( \frac{-2x - 9}{9} \)
a = \( \frac{-2x}{9} \) + \( \frac{-9}{9} \)
a = -\(\frac{2}{9}\)x - 1
If the base of this triangle is 9 and the height is 8, what is the area?
| 36 | |
| 84 | |
| 32\(\frac{1}{2}\) | |
| 40 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 9 x 8 = \( \frac{72}{2} \) = 36