| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.62 |
| Score | 0% | 72% |
If a = 2, b = 3, c = 6, and d = 4, what is the perimeter of this quadrilateral?
| 13 | |
| 24 | |
| 20 | |
| 15 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 2 + 3 + 6 + 4
p = 15
Solve for z:
4z - 3 > \( \frac{z}{1} \)
| z > -\(\frac{35}{41}\) | |
| z > \(\frac{24}{47}\) | |
| z > 1 | |
| z > -\(\frac{1}{5}\) |
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.
4z - 3 > \( \frac{z}{1} \)
1 x (4z - 3) > z
(1 x 4z) + (1 x -3) > z
4z - 3 > z
4z - 3 - z > 0
4z - z > 3
3z > 3
z > \( \frac{3}{3} \)
z > 1
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
exponents |
|
division |
|
addition |
|
pairs |
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.)
What is 5a - 3a?
| 15a | |
| 2a2 | |
| 2a | |
| 15a2 |
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.
5a - 3a = 2a
If the base of this triangle is 3 and the height is 5, what is the area?
| 84\(\frac{1}{2}\) | |
| 97\(\frac{1}{2}\) | |
| 42 | |
| 7\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 3 x 5 = \( \frac{15}{2} \) = 7\(\frac{1}{2}\)