| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.92 |
| Score | 0% | 78% |
A quadrilateral is a shape with __________ sides.
3 |
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5 |
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4 |
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2 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
If side x = 8cm, side y = 6cm, and side z = 5cm what is the perimeter of this triangle?
| 30cm | |
| 29cm | |
| 41cm | |
| 19cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 8cm + 6cm + 5cm = 19cm
What is the area of a circle with a diameter of 8?
| 16π | |
| 81π | |
| 64π | |
| 9π |
The formula for area is πr2. Radius is circle \( \frac{diameter}{2} \):
r = \( \frac{d}{2} \)
r = \( \frac{8}{2} \)
r = 4
a = πr2
a = π(42)
a = 16π
Solve for c:
-6c - 1 < 4 - c
| c < -\(\frac{2}{3}\) | |
| c < -1\(\frac{1}{2}\) | |
| c < -9 | |
| c < -1 |
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.
-6c - 1 < 4 - c
-6c < 4 - c + 1
-6c + c < 4 + 1
-5c < 5
c < \( \frac{5}{-5} \)
c < -1
A coordinate grid is composed of which of the following?
x-axis |
|
y-axis |
|
origin |
|
all of these |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.