Replace all the variables that we know the value for.
-3 = |x|
Make to equations from this one.
-3 = x and -3 = -(x)
Solve the first one.
-3 = x
x = -3 <-- Switch it around
-3 = -(x)
-(x) = -3 <-- Switch it around
x = 3 <-- Divide both sides by -1
So, there are two possible answers, -3 and 3.
The answer is B. :PPPPPPPPPP
Answer:
The number of 57-cent stamps that Julie bought is 12
Step-by-step explanation:
Given equation
0.57 s + 0.3 ( s − 6 ) = 8.64
Open bracket
0.57s + 0.3s - 1.8 = 8.64
Collect like terms
0.87s = 8.64 + 1.8
0.87s = 10.44
Divide both sides by 0.87
s = 12
The number of 57-cent stamps that Julie bought is 12
E.5 hours
All you have to do is subtract 85 from 510 till you have 0
Study all notes, reread the chapters again. Have someone ask questions on the chapters page by page. This always has worked for me. Plus try to do this again the night before the test. You will be surprised how much you can remember by doing it again the night before the test. Hope this helps.
