for 9 innings,batman has an average of70 runs. in the tenth inning. he scores 100 runs. what is his new average?
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Answered by
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Step-by-step explanation:
ANSWER
=
10
9x+100
=x+8
=⇒9x+100=10x+80
=x=20
New average, =
x
ˉ
=20+8=28
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