| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.67 |
| Score | 0% | 73% |
What is 7a8 - 8a8?
| 56a16 | |
| -1a8 | |
| -1 | |
| 15a16 |
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.
7a8 - 8a8 = -1a8
Order the following types of angle from least number of degrees to most number of degrees.
right, acute, obtuse |
|
acute, right, obtuse |
|
acute, obtuse, right |
|
right, obtuse, acute |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
If side x = 8cm, side y = 14cm, and side z = 12cm what is the perimeter of this triangle?
| 27cm | |
| 31cm | |
| 33cm | |
| 34cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 8cm + 14cm + 12cm = 34cm
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Last |
|
Inside |
|
First |
|
Odd |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses.
The dimensions of this trapezoid are a = 4, b = 5, c = 5, d = 7, and h = 2. What is the area?
| 12 | |
| 24 | |
| 15 | |
| 30 |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(5 + 7)(2)
a = ½(12)(2)
a = ½(24) = \( \frac{24}{2} \)
a = 12