| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
What is 3a + 5a?
| 8a | |
| -2 | |
| a2 | |
| 15a2 |
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.
3a + 5a = 8a
The dimensions of this cylinder are height (h) = 7 and radius (r) = 1. What is the volume?
| 196π | |
| 7π | |
| 128π | |
| 216π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(12 x 7)
v = 7π
A cylinder with a radius (r) and a height (h) has a surface area of:
2(π r2) + 2π rh |
|
4π r2 |
|
π r2h2 |
|
π r2h |
A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.
A trapezoid is a quadrilateral with one set of __________ sides.
equal length |
|
parallel |
|
equal angle |
|
right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
If c = 7 and y = 7, what is the value of 6c(c - y)?
| 112 | |
| -490 | |
| 0 | |
| 176 |
To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
6c(c - y)
6(7)(7 - 7)
6(7)(0)
(42)(0)
0