| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
Solve for x:
-7x + 3 < 4 - 8x
| x < 1 | |
| x < -\(\frac{2}{3}\) | |
| x < -3 | |
| x < -1\(\frac{2}{5}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the < sign and the answer on the other.
-7x + 3 < 4 - 8x
-7x < 4 - 8x - 3
-7x + 8x < 4 - 3
x < 1
Which of the following expressions contains exactly two terms?
monomial |
|
quadratic |
|
polynomial |
|
binomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
If the base of this triangle is 2 and the height is 3, what is the area?
| 3 | |
| 42 | |
| 27\(\frac{1}{2}\) | |
| 91 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 2 x 3 = \( \frac{6}{2} \) = 3
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.
Find the value of b:
6b + z = -6
-9b + 2z = -2
| -\(\frac{10}{21}\) | |
| -\(\frac{9}{17}\) | |
| 1 | |
| \(\frac{13}{20}\) |
You need to find the value of b so solve the first equation in terms of z:
6b + z = -6
z = -6 - 6b
then substitute the result (-6 - 6b) into the second equation:
-9b + 2(-6 - 6b) = -2
-9b + (2 x -6) + (2 x -6b) = -2
-9b - 12 - 12b = -2
-9b - 12b = -2 + 12
-21b = 10
b = \( \frac{10}{-21} \)
b = -\(\frac{10}{21}\)