| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.74 |
| Score | 0% | 75% |
What is 6a6 + 3a6?
| a612 | |
| 18a12 | |
| 9a6 | |
| 3 |
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.
6a6 + 3a6 = 9a6
If a = c = 8, b = d = 2, what is the area of this rectangle?
| 64 | |
| 10 | |
| 5 | |
| 16 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 8 x 2
a = 16
A quadrilateral is a shape with __________ sides.
3 |
|
4 |
|
5 |
|
2 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
For this diagram, the Pythagorean theorem states that b2 = ?
c2 - a2 |
|
c2 + a2 |
|
a2 - c2 |
|
c - a |
The Pythagorean theorem defines the relationship between the side lengths of a right triangle. The length of the hypotenuse squared (c2) is equal to the sum of the two perpendicular sides squared (a2 + b2): c2 = a2 + b2 or, solved for c, \(c = \sqrt{a + b}\)
If side x = 7cm, side y = 9cm, and side z = 14cm what is the perimeter of this triangle?
| 30cm | |
| 32cm | |
| 38cm | |
| 42cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 7cm + 9cm + 14cm = 30cm