| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
The dimensions of this cube are height (h) = 1, length (l) = 7, and width (w) = 4. What is the volume?
| 28 | |
| 252 | |
| 10 | |
| 504 |
The volume of a cube is height x length x width:
v = h x l x w
v = 1 x 7 x 4
v = 28
The formula for the area of a circle is which of the following?
a = π r |
|
a = π d |
|
a = π d2 |
|
a = π r2 |
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.
A(n) __________ is to a parallelogram as a square is to a rectangle.
rhombus |
|
trapezoid |
|
triangle |
|
quadrilateral |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
Solve for c:
-8c + 9 > 5 - 9c
| c > \(\frac{3}{8}\) | |
| c > -1\(\frac{1}{3}\) | |
| c > -4 | |
| c > 8 |
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.
-8c + 9 > 5 - 9c
-8c > 5 - 9c - 9
-8c + 9c > 5 - 9
c > -4
If angle a = 70° and angle b = 63° what is the length of angle d?
| 138° | |
| 122° | |
| 130° | |
| 110° |
An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite:
d° = b° + c°
To find angle c, remember that the sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 70° - 63° = 47°
So, d° = 63° + 47° = 110°
A shortcut to get this answer is to remember that angles around a line add up to 180°:
a° + d° = 180°
d° = 180° - a°
d° = 180° - 70° = 110°