| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.65 |
| Score | 0% | 73% |
What is 4a3 - 4a3?
| 0a3 | |
| 8 | |
| 6 | |
| 0 |
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.
4a3 - 4a3 = 0a3
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
|
equal angle |
|
equal length |
|
right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
If a = c = 2, b = d = 1, what is the area of this rectangle?
| 3 | |
| 45 | |
| 2 | |
| 32 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 2 x 1
a = 2
A(n) __________ is two expressions separated by an equal sign.
formula |
|
equation |
|
expression |
|
problem |
An equation is two expressions separated by an equal sign. The key to solving equations is to repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.
If side a = 7, side b = 8, what is the length of the hypotenuse of this right triangle?
| \( \sqrt{73} \) | |
| \( \sqrt{113} \) | |
| \( \sqrt{80} \) | |
| \( \sqrt{98} \) |
According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:
c2 = a2 + b2
c2 = 72 + 82
c2 = 49 + 64
c2 = 113
c = \( \sqrt{113} \)