| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.40 |
| Score | 0% | 68% |
Which types of triangles will always have at least two sides of equal length?
equilateral and right |
|
equilateral and isosceles |
|
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.
If a = c = 6, b = d = 9, what is the area of this rectangle?
| 8 | |
| 54 | |
| 15 | |
| 4 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 6 x 9
a = 54
Find the value of c:
-5c + x = -3
-7c - 5x = -4
| -\(\frac{10}{13}\) | |
| \(\frac{19}{32}\) | |
| -\(\frac{50}{57}\) | |
| \(\frac{3}{7}\) |
You need to find the value of c so solve the first equation in terms of x:
-5c + x = -3
x = -3 + 5c
then substitute the result (-3 - -5c) into the second equation:
-7c - 5(-3 + 5c) = -4
-7c + (-5 x -3) + (-5 x 5c) = -4
-7c + 15 - 25c = -4
-7c - 25c = -4 - 15
-32c = -19
c = \( \frac{-19}{-32} \)
c = \(\frac{19}{32}\)
What is the circumference of a circle with a radius of 3?
| 1π | |
| 19π | |
| 10π | |
| 6π |
The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:
c = πd
c = π(2 * r)
c = π(2 * 3)
c = 6π
A quadrilateral is a shape with __________ sides.
3 |
|
2 |
|
4 |
|
5 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.