| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
Simplify (9a)(7ab) + (3a2)(4b).
| -51ab2 | |
| 51a2b | |
| 112a2b | |
| 75a2b |
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.
(9a)(7ab) + (3a2)(4b)
(9 x 7)(a x a x b) + (3 x 4)(a2 x b)
(63)(a1+1 x b) + (12)(a2b)
63a2b + 12a2b
75a2b
Solve for x:
9x + 4 = 5 + 6x
| 1\(\frac{1}{2}\) | |
| \(\frac{1}{3}\) | |
| \(\frac{3}{4}\) | |
| -\(\frac{3}{8}\) |
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 equal sign and the answer on the other.
9x + 4 = 5 + 6x
9x = 5 + 6x - 4
9x - 6x = 5 - 4
3x = 1
x = \( \frac{1}{3} \)
x = \(\frac{1}{3}\)
Simplify 9a x 9b.
| 81\( \frac{b}{a} \) | |
| 81a2b2 | |
| 18ab | |
| 81ab |
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.
9a x 9b = (9 x 9) (a x b) = 81ab
A trapezoid is a quadrilateral with one set of __________ sides.
equal angle |
|
parallel |
|
equal length |
|
right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
Solve for c:
-3c + 1 > -1 + 3c
| c > -1 | |
| c > 1 | |
| c > -\(\frac{6}{7}\) | |
| c > \(\frac{1}{3}\) |
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.
-3c + 1 > -1 + 3c
-3c > -1 + 3c - 1
-3c - 3c > -1 - 1
-6c > -2
c > \( \frac{-2}{-6} \)
c > \(\frac{1}{3}\)