| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.58 |
| Score | 0% | 72% |
The dimensions of this cube are height (h) = 1, length (l) = 6, and width (w) = 2. What is the volume?
| 2 | |
| 12 | |
| 125 | |
| 18 |
The volume of a cube is height x length x width:
v = h x l x w
v = 1 x 6 x 2
v = 12
Which of the following is not required to define the slope-intercept equation for a line?
x-intercept |
|
slope |
|
\({\Delta y \over \Delta x}\) |
|
y-intercept |
A line on the coordinate grid can be defined by a slope-intercept equation: y = mx + b. For a given value of x, the value of y can be determined given the slope (m) and y-intercept (b) of the line. The slope of a line is change in y over change in x, \({\Delta y \over \Delta x}\), and the y-intercept is the y-coordinate where the line crosses the vertical y-axis.
If a = c = 3, b = d = 9, what is the area of this rectangle?
| 27 | |
| 3 | |
| 16 | |
| 6 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 3 x 9
a = 27
If side x = 12cm, side y = 8cm, and side z = 7cm what is the perimeter of this triangle?
| 29cm | |
| 27cm | |
| 30cm | |
| 31cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 12cm + 8cm + 7cm = 27cm
What is 8a5 - 7a5?
| 15a10 | |
| 1a5 | |
| 15 | |
| 56a10 |
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.
8a5 - 7a5 = 1a5