| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
lw x wh + lh |
|
h2 x l2 x w2 |
|
2lw x 2wh + 2lh |
|
h x l x w |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.
If a = c = 1, b = d = 4, what is the area of this rectangle?
| 40 | |
| 14 | |
| 12 | |
| 4 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 1 x 4
a = 4
If the length of AB equals the length of BD, point B __________ this line segment.
trisects |
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midpoints |
|
bisects |
|
intersects |
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.
Simplify (2a)(8ab) - (3a2)(5b).
| 1a2b | |
| 31ab2 | |
| 80a2b | |
| 80ab2 |
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.
(2a)(8ab) - (3a2)(5b)
(2 x 8)(a x a x b) - (3 x 5)(a2 x b)
(16)(a1+1 x b) - (15)(a2b)
16a2b - 15a2b
1a2b
What is 7a + 4a?
| 3 | |
| 28a | |
| 11a2 | |
| 11a |
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.
7a + 4a = 11a