Answer:
1/16
Step-by-step explanation:
Answer:
7.82
Step-by-step explanation:
I solved it
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:



The answer would be 60. By rounding, 14.2=14; 15.51=16; 14.99=15; 15.8=16.
14+15+16+16=61
Rounding: 61=60
Combine like terms the variables first. 4b-15b=-11b
-7+3=-4
-11b-4