| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
If c = 5 and z = -1, what is the value of 4c(c - z)?
| 120 | |
| 0 | |
| 432 | |
| 21 |
To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
4c(c - z)
4(5)(5 + 1)
4(5)(6)
(20)(6)
120
A cylinder with a radius (r) and a height (h) has a surface area of:
4π r2 |
|
2(π r2) + 2π rh |
|
π r2h |
|
π r2h2 |
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.
Solve for b:
-7b + 2 < 1 - 6b
| b < -\(\frac{2}{3}\) | |
| b < \(\frac{2}{3}\) | |
| b < 1 | |
| b < \(\frac{1}{2}\) |
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.
-7b + 2 < 1 - 6b
-7b < 1 - 6b - 2
-7b + 6b < 1 - 2
-b < -1
b < \( \frac{-1}{-1} \)
b < 1
If AD = 20 and BD = 17, AB = ?
| 16 | |
| 9 | |
| 1 | |
| 3 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDIf side x = 5cm, side y = 7cm, and side z = 12cm what is the perimeter of this triangle?
| 34cm | |
| 39cm | |
| 24cm | |
| 28cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 5cm + 7cm + 12cm = 24cm