Answer:
15) x = 20
16) y = 45°, z = 30°
17) all 4 corners = 90°, all 4 sides are equal length, diagonals are perpendicular, diagonals bisect the corner angles.
We can't do the extra credit because we do not have a relationship about the side lengths. We just have angle information.
Step-by-step explanation:
15) 2x + 8 = 3x - 12
x = 20
16) 2y = 90°
y = 45°
3z = 90°
z = 30°
Answer:
25
Step-by-step explanation:
Cross Multiply
16.25 x 100 = 65x
1625 = 65x
1625 = 
x = 25
Answer:
c(x + y) = a^2 + b^2
Step-by-step explanation:
All you have to do is cross multiply.
cx = a^2
cy = b^2
Add the equations.
cx + cy = a^2 + b^2
c(x + y) = a^2 + b^2
6000 *10%=600
23000-6000=17000*20%=3400
600+3400=4000
