2 years ago

[DUE TOMORROW] The mean of a list of 7 numbers is 85. The first

Mathematics

1 answer:

Alexeev081 [22]2 years ago

8 0

Answer:

Step-by-step explanation:

The mean is calculated as

mean = $\frac{sum}{count}$

Given mean = 85 , then letting x be the 7th number

$\frac{82+93+68+93+70+98+x}{7}$ = 85 ( multiply both sides by 7 )

504 + x = 595 ( subtract 504 from both sides )

x = 91

The 7th number is 91

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