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?