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jasenka [17]
3 years ago
14

−7 + 3(r − 3) = 2(r − 1) please show work

Mathematics
1 answer:
crimeas [40]3 years ago
6 0

Answer:

r=11

Step-by-step explanation:

3r-13=2r-2

3r-13+13=2r-2+13

3r=2r+11

3r-2r=2r+11-2r

r=11

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The alternative hypothesis states that the average life span is under 70 years, so the null hypothesis will state that it is equal or more than 70 years.

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