| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.06 |
| Score | 0% | 61% |
Order the following types of angle from least number of degrees to most number of degrees.
right, acute, obtuse |
|
acute, obtuse, right |
|
acute, right, obtuse |
|
right, obtuse, acute |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
If angle a = 39° and angle b = 52° what is the length of angle c?
| 89° | |
| 52° | |
| 71° | |
| 98° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 39° - 52° = 89°
Solve for b:
5b + 7 < 5 + 6b
| b < \(\frac{5}{6}\) | |
| b < \(\frac{2}{3}\) | |
| b < -1 | |
| b < 2 |
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 + 7 < 5 + 6b
5b < 5 + 6b - 7
5b - 6b < 5 - 7
-b < -2
b < \( \frac{-2}{-1} \)
b < 2
On this circle, line segment CD is the:
circumference |
|
radius |
|
diameter |
|
chord |
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 cylinder are height (h) = 9 and radius (r) = 1. What is the volume?
| 18π | |
| 243π | |
| 9π | |
| 192π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(12 x 9)
v = 9π