| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.71 |
| Score | 0% | 74% |
If angle a = 33° and angle b = 26° what is the length of angle c?
| 79° | |
| 121° | |
| 120° | |
| 100° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 33° - 26° = 121°
Simplify 8a x 8b.
| 64\( \frac{b}{a} \) | |
| 64ab | |
| 64\( \frac{a}{b} \) | |
| 64a2b2 |
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.
8a x 8b = (8 x 8) (a x b) = 64ab
What is 5a7 + 8a7?
| 13a7 | |
| 13 | |
| 13a14 | |
| 40a14 |
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.
5a7 + 8a7 = 13a7
A coordinate grid is composed of which of the following?
x-axis |
|
origin |
|
y-axis |
|
all of these |
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.
The dimensions of this trapezoid are a = 6, b = 5, c = 8, d = 4, and h = 5. What is the area?
| 22\(\frac{1}{2}\) | |
| 11 | |
| 35 | |
| 16 |
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(5 + 4)(5)
a = ½(9)(5)
a = ½(45) = \( \frac{45}{2} \)
a = 22\(\frac{1}{2}\)