SOLUTION: To find a baseball pitcher's earned run average (ERA), you can use the formal Ei= 9r, in which E represents ERA, i represents the number of innings pitched, and r represents the nu

Algebra ->  Systems-of-equations -> SOLUTION: To find a baseball pitcher's earned run average (ERA), you can use the formal Ei= 9r, in which E represents ERA, i represents the number of innings pitched, and r represents the nu      Log On


   

Question 988346: To find a baseball pitcher's earned run average (ERA), you can use the formal Ei= 9r, in which E represents ERA, i represents the number of innings pitched, and r represents the number of earned runs allowed. Solve the equation for E. What is a pitcher's ERA if he allows 5 earned runs in 18 innings pitched?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
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Ei=9r
E=9r%2Fi
E=9%285%29%2F18
E=45%2F18
E=2.5
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ANSWER: His ERA is 2.5.