C because 9 + 5 is not 15 and because 13 + 5 is not 20
(f+g) means add the expressions together. combine like terms.


there is no other constant term so the -4 stays as is.
Answer:
No
Step-by-step explanation:
A triangle's lengths HAVE TO add up to 180 degrees.
Answer:
Step-by-step explanation:
Answer:
First piece = 6 inches
Second piece = 12 inches
Third piece = 18 inches
Step-by-step explanation:
Length of the first piece = x
Length of the second piece = 2x
Length of the third piece = 3x
Total length is 36 inches:
x + 2x + 3x = 36
6x = 36
x = 6
Therefore, the lengths are:
First piece = 6 inches
Second piece = 12 inches
Third piece = 18 inches