| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.44 |
| Score | 0% | 69% |
A(n) __________ is to a parallelogram as a square is to a rectangle.
rhombus |
|
trapezoid |
|
triangle |
|
quadrilateral |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
What is 5a - 7a?
| 35a2 | |
| -2 | |
| -2a | |
| a2 |
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 - 7a = -2a
A quadrilateral is a shape with __________ sides.
2 |
|
5 |
|
3 |
|
4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
Simplify (5a)(8ab) + (6a2)(6b).
| -4a2b | |
| 156ab2 | |
| 4ab2 | |
| 76a2b |
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.
(5a)(8ab) + (6a2)(6b)
(5 x 8)(a x a x b) + (6 x 6)(a2 x b)
(40)(a1+1 x b) + (36)(a2b)
40a2b + 36a2b
76a2b
Solve for x:
5x - 9 = 7 - x
| 2\(\frac{2}{3}\) | |
| -1\(\frac{1}{6}\) | |
| \(\frac{1}{2}\) | |
| \(\frac{3}{4}\) |
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.
5x - 9 = 7 - x
5x = 7 - x + 9
5x + x = 7 + 9
6x = 16
x = \( \frac{16}{6} \)
x = 2\(\frac{2}{3}\)