| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.97 |
| Score | 0% | 59% |
Solve for b:
-5b - 5 < 8 + b
| b < -2\(\frac{1}{6}\) | |
| b < 6 | |
| b < -\(\frac{7}{9}\) | |
| b < -1 |
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.
-5b - 5 < 8 + b
-5b < 8 + b + 5
-5b - b < 8 + 5
-6b < 13
b < \( \frac{13}{-6} \)
b < -2\(\frac{1}{6}\)
Order the following types of angle from least number of degrees to most number of degrees.
acute, obtuse, right |
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right, obtuse, acute |
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acute, right, obtuse |
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right, acute, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
On this circle, a line segment connecting point A to point D is called:
diameter |
|
chord |
|
circumference |
|
radius |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
The dimensions of this cube are height (h) = 3, length (l) = 9, and width (w) = 6. What is the surface area?
| 198 | |
| 72 | |
| 88 | |
| 22 |
The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):
sa = 2lw + 2wh + 2lh
sa = (2 x 9 x 6) + (2 x 6 x 3) + (2 x 9 x 3)
sa = (108) + (36) + (54)
sa = 198
What is the circumference of a circle with a radius of 11?
| 15π | |
| 24π | |
| 28π | |
| 22π |
The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:
c = πd
c = π(2 * r)
c = π(2 * 11)
c = 22π