| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.57 |
| Score | 0% | 71% |
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
h2 x l2 x w2 |
|
2lw x 2wh + 2lh |
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h x l x w |
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lw x wh + lh |
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.
A(n) __________ is to a parallelogram as a square is to a rectangle.
trapezoid |
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quadrilateral |
|
rhombus |
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triangle |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
If a = c = 3, b = d = 9, what is the area of this rectangle?
| 27 | |
| 24 | |
| 28 | |
| 16 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 3 x 9
a = 27
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
exponents |
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addition |
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division |
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pairs |
When solving an equation with two variables, 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.)
Simplify (7a)(5ab) + (2a2)(3b).
| 60a2b | |
| 41ab2 | |
| 41a2b | |
| 60ab2 |
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)(5ab) + (2a2)(3b)
(7 x 5)(a x a x b) + (2 x 3)(a2 x b)
(35)(a1+1 x b) + (6)(a2b)
35a2b + 6a2b
41a2b