Answer:
i tried it by trial and error, and my work is below.
Step-by-step explanation:
2x + 9 = 23
subtract 9 from both sides
2x = 14
guess.... lol
x=7
Answer:

Step-by-step explanation:

Answer:
d = 2.54951
Step-by-step explanation:
For:
(X1, Y1) = (4, 2)
(X2, Y2) = (4.5, 4.5)
d = \sqrt {(4.5 - 4)^2 + (4.5 - 2)^2}