Answer:
Step-by-step explanation:
remove parentheses by multiplying factors.
use exponent rules to remove parentheses in terms with exponents.
combine like terms by adding coefficients.
combine the constants.
Answer:
3.79545454545 or 3.7954 with a little line over the 54 showing its repeating.
This makes no since i am confused
notice the equations in slope-intercept form, the first one has a slope of -1, the second one has a slope of 1.
if the slopes are equal, and the constant is different, they lines are parallel.
if the slopes are equal, and the constant is the same the equations are exactly the same thing, and the lines are coincident, on slapped on top of the other.
if the slopes differ, like here, then they have a solution, where they
intersect.
Angle x would be 40 since if you add the 2 known degrees 60 and 80 you would get 140, and since a triangle will always be 180 degrees added together and when you subtract 140 from 180 you will get 40 which will be the last angle