| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 4.04 |
| Score | 0% | 81% |
The dimensions of this cube are height (h) = 6, length (l) = 5, and width (w) = 1. What is the volume?
| 72 | |
| 120 | |
| 30 | |
| 27 |
The volume of a cube is height x length x width:
v = h x l x w
v = 6 x 5 x 1
v = 30
Simplify (9a)(2ab) + (5a2)(9b).
| 63ab2 | |
| 27a2b | |
| -27a2b | |
| 63a2b |
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.
(9a)(2ab) + (5a2)(9b)
(9 x 2)(a x a x b) + (5 x 9)(a2 x b)
(18)(a1+1 x b) + (45)(a2b)
18a2b + 45a2b
63a2b
Which of the following expressions contains exactly two terms?
monomial |
|
polynomial |
|
quadratic |
|
binomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
If side x = 10cm, side y = 7cm, and side z = 12cm what is the perimeter of this triangle?
| 27cm | |
| 33cm | |
| 28cm | |
| 29cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 10cm + 7cm + 12cm = 29cm
A right angle measures:
45° |
|
90° |
|
360° |
|
180° |
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.