| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.26 |
| Score | 0% | 65% |
If a = c = 6, b = d = 3, what is the area of this rectangle?
| 18 | |
| 28 | |
| 27 | |
| 12 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 6 x 3
a = 18
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
|
parallel |
|
equal length |
|
equal angle |
A trapezoid is a quadrilateral with one set of parallel sides.
Solve for z:
-z - 2 > \( \frac{z}{-3} \)
| z > 1\(\frac{1}{6}\) | |
| z > 1\(\frac{3}{5}\) | |
| z > 4\(\frac{2}{3}\) | |
| z > -3 |
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.
-z - 2 > \( \frac{z}{-3} \)
-3 x (-z - 2) > z
(-3 x -z) + (-3 x -2) > z
3z + 6 > z
3z + 6 - z > 0
3z - z > -6
2z > -6
z > \( \frac{-6}{2} \)
z > -3
What is 3a + 5a?
| 8a2 | |
| 15a2 | |
| -2a2 | |
| 8a |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
3a + 5a = 8a
A cylinder with a radius (r) and a height (h) has a surface area of:
4π r2 |
|
π r2h2 |
|
2(π r2) + 2π rh |
|
π r2h |
A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.