| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.89 |
| Score | 0% | 78% |
The dimensions of this cube are height (h) = 7, length (l) = 8, and width (w) = 3. What is the volume?
| 168 | |
| 315 | |
| 12 | |
| 36 |
The volume of a cube is height x length x width:
v = h x l x w
v = 7 x 8 x 3
v = 168
Order the following types of angle from least number of degrees to most number of degrees.
right, obtuse, acute |
|
right, acute, obtuse |
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acute, right, obtuse |
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acute, obtuse, right |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
Which of the following statements about math operations is incorrect?
you can subtract monomials that have the same variable and the same exponent |
|
you can add monomials that have the same variable and the same exponent |
|
all of these statements are correct |
|
you can multiply monomials that have different variables and different exponents |
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 a = 2, b = 3, c = 8, and d = 9, what is the perimeter of this quadrilateral?
| 22 | |
| 21 | |
| 30 | |
| 16 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 2 + 3 + 8 + 9
p = 22
The formula for the area of a circle is which of the following?
a = π d |
|
a = π r |
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a = π r2 |
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a = π d2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.