(Please help, anyone)
The mean of four numbers is 7. Three of the numbers are 5, 7, and 7. What is the fourth number? Explain your reasoning.
(Please help, anyone)
The mean of four numbers is 7. Three of the numbers are 5, 7, and 7. What is the fourth number? Explain your reasoning.
Answer:
9
Step-by-step explanation:
[tex]mean = \frac{5 + 7 + 7 + x}{4} = 7[/tex]
Solving for x,
x = 9