D - I think. -4 should be the x-axis and 3 should be the y-axis, so they swapped them. The wording is just confusing, but I think it’s that^^
The variance would be 1213.89
i hope this helps :)
Because instead of having to multiply and divide you can just distribute and add to get you answer quicker
Answer: 1, -1
Step-by-step explanation: This is a difference of squares when factored,
(x+1)(x-1)
Let's check using FOIL(First, outside, inside, last)
x * x =x^2
1 *x =x
x * (-1) =-x
1* -1 =-1
so x^2 +x -x -1
=x^2 -1
A triangle measures to 180 degrees. So you would do 74 + 52 to get 126. Then you would do 180 - 126 to get 54.
