Step-by-step explanation:
click the photo there is answrr
Answer:
(f+g)(x) = 5x + 3
Step-by-step explanation:
f(x) = 2x - 6 and g(x) = 3x + 9, find (f+g)(x)
(f+g)(x) = f + g = (2x - 6) + (3x + 9) = 5x + 3
(f+g)(x) = f + g = 5x + 3
2x+x-7+3x-20=87cm
6x-27=87
6x=114
x=19
Therefore the sides are:12cm, 38cm, and 37cm
As a formula, you're saying 4*(n-7)=32
This solves to n-7 = 8, so n=15
3^2+3^2=c^2
18=c^2
c=3sqrt2
Or 4.24 if you need a decimal answer