| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.06 |
| Score | 0% | 61% |
If angle a = 45° and angle b = 69° what is the length of angle c?
| 83° | |
| 66° | |
| 63° | |
| 86° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 45° - 69° = 66°
If a = c = 9, b = d = 10, what is the area of this rectangle?
| 10 | |
| 1 | |
| 90 | |
| 72 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 9 x 10
a = 90
Solve for c:
7c - 4 = \( \frac{c}{5} \)
| -1\(\frac{23}{49}\) | |
| -4 | |
| -2\(\frac{11}{35}\) | |
| \(\frac{10}{17}\) |
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.
7c - 4 = \( \frac{c}{5} \)
5 x (7c - 4) = c
(5 x 7c) + (5 x -4) = c
35c - 20 = c
35c - 20 - c = 0
35c - c = 20
34c = 20
c = \( \frac{20}{34} \)
c = \(\frac{10}{17}\)
Simplify (3a)(7ab) + (6a2)(2b).
| 33ab2 | |
| 9a2b | |
| 80a2b | |
| 33a2b |
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.
(3a)(7ab) + (6a2)(2b)
(3 x 7)(a x a x b) + (6 x 2)(a2 x b)
(21)(a1+1 x b) + (12)(a2b)
21a2b + 12a2b
33a2b
If the length of AB equals the length of BD, point B __________ this line segment.
intersects |
|
bisects |
|
midpoints |
|
trisects |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.