| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.65 |
| Score | 0% | 73% |
What is 7a4 + 3a4?
| 21a8 | |
| a48 | |
| 10a4 | |
| 21a4 |
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.
7a4 + 3a4 = 10a4
If a = c = 2, b = d = 5, and the blue angle = 72°, what is the area of this parallelogram?
| 24 | |
| 6 | |
| 10 | |
| 63 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 2 x 5
a = 10
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
pairs |
|
addition |
|
exponents |
|
division |
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.)
If the base of this triangle is 5 and the height is 3, what is the area?
| 7\(\frac{1}{2}\) | |
| 72 | |
| 105 | |
| 84 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 5 x 3 = \( \frac{15}{2} \) = 7\(\frac{1}{2}\)
The formula for the area of a circle is which of the following?
a = π d2 |
|
a = π d |
|
a = π r |
|
a = π r2 |
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.