Answer:
the mean is the average, so you would add up all the numbers and then divide by the amount of numbers
so the answer would be 67.5
3x - 5 = 10
Step-by-step explanation:
5.25
1. 19 + 1/4x =40
2. 1/4x=40-19
3. 1/4x=21
4. x= 21/1/4
5. x= 5.25
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