| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.78 |
| Score | 0% | 76% |
What is 2a2 - 5a2?
| 7a4 | |
| a24 | |
| -3a2 | |
| 10a2 |
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.
2a2 - 5a2 = -3a2
If angle a = 48° and angle b = 61° what is the length of angle c?
| 89° | |
| 66° | |
| 118° | |
| 71° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 48° - 61° = 71°
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
addition |
|
division |
|
pairs |
|
exponents |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
The dimensions of this cylinder are height (h) = 5 and radius (r) = 6. What is the volume?
| 162π | |
| 384π | |
| 324π | |
| 180π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(62 x 5)
v = 180π
If BD = 11 and AD = 18, AB = ?
| 7 | |
| 12 | |
| 15 | |
| 5 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BD