Answer:
Answer= 17.5 (B)
Step-by-step explanation:
This is tangent because TOA(opposite/adjacent)
On your calculator, do side length(25) sin angle(35)=17.5
Rewrite the system of equations in matrix form.
This system has a unique solution 
so long as the inverse of the coefficient matrix 
exists. This is the case if the determinant is not zero.
We have
so the inverse, and hence a unique solution to the system of equations, exists as long as m ≠ -4.
You can plug -x - 1 for y in the first equation
2x - (-x - 1) = 10
2x + x + 1 = 10
Combine
3x = 9
Divide
x = 3
Plug 3 for x in any equation ( I'll use th second equation )
y = - (3) - 1
y = - 3 - 1 = -4
x = 3 ; y = -4
(3, -4)
y = x + 5
If it's perpendicular the slope is the opposite inverse of the other line,
The slope of line y = x + 5 is 1, because it's the number before x, so, the opposite inverse would be -1/1 = -1.
Answer:
37
add all of them together then divide it by two
