| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.53 |
| Score | 0% | 51% |
Which types of triangles will always have at least two sides of equal length?
equilateral and isosceles |
|
equilateral and right |
|
isosceles and right |
|
equilateral, isosceles and right |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
Solve for y:
-8y - 1 = \( \frac{y}{-9} \)
| -\(\frac{5}{13}\) | |
| 9 | |
| -\(\frac{9}{71}\) | |
| -4\(\frac{1}{6}\) |
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 equal sign and the answer on the other.
-8y - 1 = \( \frac{y}{-9} \)
-9 x (-8y - 1) = y
(-9 x -8y) + (-9 x -1) = y
72y + 9 = y
72y + 9 - y = 0
72y - y = -9
71y = -9
y = \( \frac{-9}{71} \)
y = -\(\frac{9}{71}\)
The formula for the area of a circle is which of the following?
c = π r2 |
|
c = π d |
|
c = π r |
|
c = π d2 |
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 the base of this triangle is 6 and the height is 1, what is the area?
| 54 | |
| 3 | |
| 78 | |
| 60 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 6 x 1 = \( \frac{6}{2} \) = 3
What is the circumference of a circle with a radius of 11?
| 22π | |
| 34π | |
| 26π | |
| 8π |
The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:
c = πd
c = π(2 * r)
c = π(2 * 11)
c = 22π