Answer:
C, z = 45°
Step-by-step explanation:
Statements Reasons
2z + 90° = 180° PWP, Def. of Right Δ
2z = 90° Algebra
z = 45° Algebra
(PWP stands for Partial-Whole-Postulate)
Hope this helps and good luck with the rest of your assignment :)
First, replace f(x) with y.
So we have now:
y = 3x + 1
Next, switch the x and y.
We get:
x = 3y + 1
Finally, solve for y.
3y = x - 1
y = x/3 - 1/3
So, we have f(x) = 3x + 1, and the inverse of this function is:
Answer:
r > -69
Step-by-step explanation:
13 - r < 82
subtract 13 from both sides
13 - r - 13 < 82 - 13
- r < 69
to flip the inequality sign, multiply both side by -1 to make r positive:
- r (-1) < 69 (-1)
r > -69