Step-by-step explanation:
Find the cost of one part and then multiply that number by 9
Answer:
a
Step-by-step explanation:
I think it is undefined
Answer:



Step-by-step explanation:
Given

Required
Select 3 equivalent expressions

Express 9 as 3^2
--- This is one equivalent expression
Take
as difference of two squares
-- This is another equivalent expression:
Solving further:
becomes
-- This is another equivalent expression:
Hence, the equivalent expressions are:



Answer:
9 pictures
Step-by-step explanation:
if Noah needed 20 pictures in all ,but only had 11 he would subtract 11 from 20 leaving Noah with 9 pictures.