| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.66 |
| Score | 0% | 53% |
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
2lw x 2wh + 2lh |
|
lw x wh + lh |
|
h2 x l2 x w2 |
|
h x l x w |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.
Solve for x:
-6x + 5 > \( \frac{x}{2} \)
| x > \(\frac{10}{13}\) | |
| x > \(\frac{36}{47}\) | |
| x > \(\frac{24}{25}\) | |
| x > -\(\frac{32}{49}\) |
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.
-6x + 5 > \( \frac{x}{2} \)
2 x (-6x + 5) > x
(2 x -6x) + (2 x 5) > x
-12x + 10 > x
-12x + 10 - x > 0
-12x - x > -10
-13x > -10
x > \( \frac{-10}{-13} \)
x > \(\frac{10}{13}\)
The formula for the area of a circle is which of the following?
c = π d2 |
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c = π r2 |
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c = π r |
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c = π d |
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.
If side x = 14cm, side y = 6cm, and side z = 8cm what is the perimeter of this triangle?
| 33cm | |
| 30cm | |
| 29cm | |
| 28cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 14cm + 6cm + 8cm = 28cm
On this circle, a line segment connecting point A to point D is called:
chord |
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radius |
|
circumference |
|
diameter |
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).