Posted by **Anonymous** on Monday, September 30, 2013 at 9:51pm.

To find a baseball pitcher's earned run average (ERA), you can use the formula Ei = 9r, where E represents ERA, i represents number of innings pitched, and r represents 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?

- Algebra 1-- I do not understand -
**bobpursley**, Monday, September 30, 2013 at 9:55pm
divide both sides of the equation by i

E=9r/i

- Algebra 1-- I do not understand -
**Anonymous**, Monday, September 30, 2013 at 9:57pm
What is a pitcher's ERA if he allows 5 earned runs in 18 innings pitched?

- Algebra 1-- I do not understand -
**bobpursley**, Monday, September 30, 2013 at 10:03pm
I gave you the formula. Goodness. can you not put in the numbers, and compute?

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