| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.86 |
| Score | 0% | 77% |
The dimensions of this cube are height (h) = 1, length (l) = 1, and width (w) = 3. What is the volume?
| 49 | |
| 192 | |
| 3 | |
| 252 |
The volume of a cube is height x length x width:
v = h x l x w
v = 1 x 1 x 3
v = 3
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
pairs |
|
exponents |
|
division |
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addition |
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.)
If a = 4, b = 4, c = 5, and d = 7, what is the perimeter of this quadrilateral?
| 8 | |
| 19 | |
| 16 | |
| 20 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 4 + 5 + 7
p = 20
Which of the following statements about math operations is incorrect?
you can multiply monomials that have different variables and different exponents |
|
you can subtract monomials that have the same variable and the same exponent |
|
all of these statements are correct |
|
you can add monomials that have the same variable and the same exponent |
You can only add or subtract monomials that have the same variable and the same exponent. For example, 2a + 4a = 6a and 4a2 - a2 = 3a2 but 2a + 4b and 7a - 3b cannot be combined. However, you can multiply and divide monomials with unlike terms. For example, 2a x 6b = 12ab.
If the base of this triangle is 8 and the height is 5, what is the area?
| 75 | |
| 36 | |
| 32\(\frac{1}{2}\) | |
| 20 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 8 x 5 = \( \frac{40}{2} \) = 20