Answer:

Step-by-step explanation:

9514 1404 393
Answer:
4.5
Step-by-step explanation:
The value of x that makes f(x) = -3 is ...
4/3x -9 = -3
4/3x = 6 . . . . . . add 9
x = 6(3/4) = 18/4 = 9/2 = 4.5 . . . . multiply by 3/4
f^-1(-3) = 4.5
I need this answer too, did you figure it out?
Four angles must add up to 360.
∠A+∠B+∠C+∠D=360
(5/2x+30)+(7/2x+40)+(9/2x+10)+(5/2x+20)=360
26/2x + 100 = 360
13x = 260
x = 20.
To solve for ∠C, plug x back in:
∠C = 9/2x+10 = 9/2*20+10 = 100
Answer:
it c
Step-by-step explanation:
hope it help