Answer:
the answer is 8 7/8
Step-by-step explanation:
mean= sum of all observations /no.of observation
mean=45+80+15+10+94/5
mean=244/5
mean=48.8
this is how the calculator gets 48.8
(3x+1)+(4x-5)=8x-9
7x-1=8x-9
7x=8x-8
-x=-8
X=8
please can ur equation and send it again ....I will help you
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