| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.53 |
| Score | 0% | 71% |
If the base of this triangle is 6 and the height is 5, what is the area?
| 30 | |
| 20 | |
| 15 | |
| 112\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 6 x 5 = \( \frac{30}{2} \) = 15
Which of the following expressions contains exactly two terms?
quadratic |
|
monomial |
|
polynomial |
|
binomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
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 formula for the area of a circle is which of the following?
a = π d2 |
|
a = π r2 |
|
a = π d |
|
a = π r |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
Solve for x:
-6x - 1 = \( \frac{x}{9} \)
| -2\(\frac{5}{11}\) | |
| \(\frac{32}{65}\) | |
| \(\frac{9}{10}\) | |
| -\(\frac{9}{55}\) |
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.
-6x - 1 = \( \frac{x}{9} \)
9 x (-6x - 1) = x
(9 x -6x) + (9 x -1) = x
-54x - 9 = x
-54x - 9 - x = 0
-54x - x = 9
-55x = 9
x = \( \frac{9}{-55} \)
x = -\(\frac{9}{55}\)