Answer:
okay
Step-by-step explanation:
complementary angles are angles that add up to 90 degrees
so what you would do is take each number that you have and subtract it from 90
In the first one you would
1. take 90-80
2. you get your answer of 10!
i hope this helps :)
Answer: 
Step-by-step explanation:
Move all terms to one side.

Use the Quadratic Formula.
, 
4/3 can be written as 4:3 or 4/3 and is a real number
Answer:
x is equal to negative one, and y is equal to negative four.
Step-by-step explanation:
You can do this by solving one of the equations by either x or y, then substituting it into the other. Let's solve the second one for y:

Now we'll substitute that into the first equation:

So we now know that x is equal to -1. We can simply substitute that into one of the original equations to find y:

We now know that x is equal to -1, and y is equal to -4. We can also check our answer by plugging that -4 into the other equation, and see if we still get -1:

So we know that our answer is correct.
Answer:
The answer is 'C' "The slope of line BC is equal to the slope of line segment DE"
Step-by-step explanation:
This is correct. I checked my answer for this about 3 times. If this isn't correct then my next bet is answer 'D'
{-Please give me credit for trying, Thank you-}