| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.65 |
| Score | 0% | 73% |
If the base of this triangle is 8 and the height is 6, what is the area?
| 24 | |
| 56 | |
| 52 | |
| 82\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 8 x 6 = \( \frac{48}{2} \) = 24
Which of the following expressions contains exactly two terms?
monomial |
|
polynomial |
|
binomial |
|
quadratic |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
Solve for a:
-8a + 1 = 5 + 7a
| -\(\frac{4}{15}\) | |
| -\(\frac{4}{7}\) | |
| \(\frac{1}{2}\) | |
| -\(\frac{5}{9}\) |
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.
-8a + 1 = 5 + 7a
-8a = 5 + 7a - 1
-8a - 7a = 5 - 1
-15a = 4
a = \( \frac{4}{-15} \)
a = -\(\frac{4}{15}\)
The formula for the area of a circle is which of the following?
a = π d |
|
a = π d2 |
|
a = π r2 |
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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.
A right angle measures:
360° |
|
180° |
|
45° |
|
90° |
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.