| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.52 |
| Score | 0% | 70% |
If the length of AB equals the length of BD, point B __________ this line segment.
bisects |
|
intersects |
|
trisects |
|
midpoints |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.
Simplify (5a)(8ab) + (6a2)(2b).
| 28ab2 | |
| 52ab2 | |
| -28a2b | |
| 52a2b |
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)(2b)
(5 x 8)(a x a x b) + (6 x 2)(a2 x b)
(40)(a1+1 x b) + (12)(a2b)
40a2b + 12a2b
52a2b
What is 6a - 8a?
| 14 | |
| 48a2 | |
| -2a | |
| 14a2 |
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.
6a - 8a = -2a
A(n) __________ is two expressions separated by an equal sign.
expression |
|
equation |
|
formula |
|
problem |
An equation is two expressions separated by an equal sign. The key to solving equations is to 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.
Simplify 2a x 8b.
| 16ab | |
| 16\( \frac{b}{a} \) | |
| 16\( \frac{a}{b} \) | |
| 16a2b2 |
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.
2a x 8b = (2 x 8) (a x b) = 16ab