The Census Bureau wants to conduct a survey to determine the percentage of adults that buy clothing online. How many adults do t
hey need to survey in order to be confident that the sample proportion is in error by no more that 2 percentage points.
1 answer:
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Answer:
2
Step-by-step explanation:
Substitute y=2x in the first equation into the second.
The second equation then becomes;
x = -(2x)+6
x = -2x+6
Collectiing like terms, more -2x to the left,
x+2x =6
3x=6
x=
x= 2
See attached picture
Hope this helps
Hope this helps