To find a baseball pitcher's earned run average (ERA), you can use the formula Ei = 9r, in which E represents ERA, i represents the number of innings pitched, and r represents the number of earned runs allowed.What is the equation for E?
E= 9r/i
To find the equation for E, we can rearrange the given formula Ei = 9r.
Dividing both sides of the equation by i, we get:
Ei / i = 9r / i
Since Ei / i is equivalent to E, and 9r / i is equivalent to the earned run average (ERA), the equation becomes:
E = ERA.
Therefore, the equation for E, the baseball pitcher's earned run average (ERA), is simply E = ERA.