| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.14 |
| Score | 0% | 63% |
If the base of this triangle is 6 and the height is 6, what is the area?
| 18 | |
| 91 | |
| 82\(\frac{1}{2}\) | |
| 66 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 6 x 6 = \( \frac{36}{2} \) = 18
Simplify (7a)(2ab) - (8a2)(6b).
| -34a2b | |
| 62a2b | |
| 62ab2 | |
| 126ab2 |
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.
(7a)(2ab) - (8a2)(6b)
(7 x 2)(a x a x b) - (8 x 6)(a2 x b)
(14)(a1+1 x b) - (48)(a2b)
14a2b - 48a2b
-34a2b
On this circle, line segment CD is the:
circumference |
|
radius |
|
chord |
|
diameter |
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).
The dimensions of this cylinder are height (h) = 4 and radius (r) = 2. What is the volume?
| 392π | |
| 16π | |
| 8π | |
| 343π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(22 x 4)
v = 16π
Simplify 3a x 8b.
| 24ab | |
| 11ab | |
| 24\( \frac{a}{b} \) | |
| 24\( \frac{b}{a} \) |
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 x 8b = (3 x 8) (a x b) = 24ab