| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 4.16 |
| Score | 0% | 83% |
What is 5a + 3a?
| 2 | |
| 8a | |
| 2a2 | |
| a2 |
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.
5a + 3a = 8a
If angle a = 41° and angle b = 57° what is the length of angle c?
| 89° | |
| 77° | |
| 85° | |
| 82° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 41° - 57° = 82°
Simplify 2a x 6b.
| 12a2b2 | |
| 12\( \frac{b}{a} \) | |
| 12\( \frac{a}{b} \) | |
| 12ab |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
2a x 6b = (2 x 6) (a x b) = 12ab
A quadrilateral is a shape with __________ sides.
4 |
|
2 |
|
3 |
|
5 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
If a = 1, b = 4, c = 1, and d = 3, what is the perimeter of this quadrilateral?
| 16 | |
| 23 | |
| 19 | |
| 9 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 1 + 4 + 1 + 3
p = 9