| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.05 |
| Score | 0% | 61% |
Simplify 4a x 7b.
| 28\( \frac{a}{b} \) | |
| 28\( \frac{b}{a} \) | |
| 28ab | |
| 11ab |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
4a x 7b = (4 x 7) (a x b) = 28ab
If a = 4, b = 5, c = 2, and d = 2, what is the perimeter of this quadrilateral?
| 21 | |
| 13 | |
| 20 | |
| 22 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 5 + 2 + 2
p = 13
Solve b + 6b = -2b - z - 6 for b in terms of z.
| 2z + \(\frac{4}{5}\) | |
| -3\(\frac{2}{3}\)z + \(\frac{2}{3}\) | |
| -2\(\frac{1}{3}\)z - 2 | |
| 6z - 6 |
To solve this equation, isolate the variable for which you are solving (b) on one side of the equation and put everything else on the other side.
b + 6z = -2b - z - 6
b = -2b - z - 6 - 6z
b + 2b = -z - 6 - 6z
3b = -7z - 6
b = \( \frac{-7z - 6}{3} \)
b = \( \frac{-7z}{3} \) + \( \frac{-6}{3} \)
b = -2\(\frac{1}{3}\)z - 2
The formula for the area of a circle is which of the following?
c = π d2 |
|
c = π d |
|
c = π r2 |
|
c = π r |
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.
If AD = 26 and BD = 22, AB = ?
| 4 | |
| 13 | |
| 12 | |
| 16 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BD