Question

In baseball, the equation

E=9R/I


gives a pitchers run average E, where R is the number of earned runs the player allowed and I is the number of innings pitched.

Last season, a pitcher had earned run average of 2.80 and allowed 70 earned runs. How many innings did the pitcher pitch last season?

Answer 1

@ganeshie8

Answer 2

\[2.80 = \frac{ 9(70) }{ I }\]

Answer 3

Haha I don't even know if I wrote this right o-o

Answer 4

looks good to me...can you finish it ?

Answer 5

\[2.80 = \frac{ 630 }{ I }\]

Answer 6

Then multiply by I?

Answer 7

yes

Answer 8

I(2.80) = 630

Answer 9

correct....now divide both sides by 2.80 to get I by itself

Answer 10

Divide 630 by 2.80 o-o

Fun xD

Answer 11

yep

Answer 12

so what did you get ?

Answer 13

225

Answer 14

I = 225?

Answer 15

you can even check your answer..
E = (9R) / I
2.80 = (9)(70) / 225
2.80 = 630/225
2.80 = 2.80 (correct)

so I = 225

Answer 16

Wow thanks @texaschic101 ;3

Answer 17

no problem :)

Answer 18

Could you help me with another algebraic problem real quick?

Answer 19

I just gotta find that paper o-o

Answer 20

11)

\[\frac{ 3 }{ 4 }t + \frac{ 5 }{ 6 } = \frac{ 2 }{ 3 }t \]