| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.14 |
| Score | 0% | 63% |
The formula for the area of a circle is which of the following?
c = π r2 |
|
c = π r |
|
c = π d |
|
c = 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.
The dimensions of this cube are height (h) = 5, length (l) = 9, and width (w) = 8. What is the volume?
| 360 | |
| 48 | |
| 42 | |
| 28 |
The volume of a cube is height x length x width:
v = h x l x w
v = 5 x 9 x 8
v = 360
Solve for x:
4x + 6 > \( \frac{x}{7} \)
| x > -\(\frac{1}{6}\) | |
| x > -1\(\frac{5}{9}\) | |
| x > 2\(\frac{9}{20}\) | |
| x > -\(\frac{10}{41}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the > sign and the answer on the other.
4x + 6 > \( \frac{x}{7} \)
7 x (4x + 6) > x
(7 x 4x) + (7 x 6) > x
28x + 42 > x
28x + 42 - x > 0
28x - x > -42
27x > -42
x > \( \frac{-42}{27} \)
x > -1\(\frac{5}{9}\)
Order the following types of angle from least number of degrees to most number of degrees.
acute, right, obtuse |
|
right, acute, obtuse |
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right, obtuse, acute |
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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°.
A coordinate grid is composed of which of the following?
y-axis |
|
x-axis |
|
origin |
|
all of these |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.