fats52
Answered

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the mean average distance that jack runs in his last 10 runs is 5.7 miles. work out the distance that he would need to make this exactly 6 miles

Sagot :

Answer:

9 miles

Step-by-step explanation:

mean is calculated as

mean = [tex]\frac{sum}{count}[/tex] , then

[tex]\frac{sum}{10}[/tex] = 5.7 ( multiply both sides by 10 )

sum = 57

let x be the distance he needs to cover so mean is 6 , that is

[tex]\frac{sum+x}{11}[/tex] = 6 ( multiply both sides by 11 )

sum + x = 66 , that is

57 + x = 66 ( subtract 57 from both sides )

x = 9

That is he would have to run 9 miles

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