North lake High school has two lunch periods.... select the true statement
2 answers:
Answer:
Option D.
Step-by-step explanation:
Northlake high school has two lunch periods. Students can eat their lunch in the cafeteria or on an outside patio.
Percentage of students who have first lunch eat outside= =
%
Similarly percentage of second lunch students eat outside= =
%
Therefore, option D is the correct option.
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Answer:
The step 4 is not what he should have done. But the wrong is step 5, because if he added -2x both sides, it would give the following equation:
and not
Note that in step 4 he should have added 2x and not -2x to both sides, but we still have the equality. The problem is that step 5 is totally wrong.
I don't know what answer is expected to this question, but I would mark step 5, because this is mathematically wrong.
Solving the equation
Using distribution
Add both sides
Add 12 both sides
Divide both sides by 5