Anna is going to play guitar in her school's annual concert. If she starts by practicing for one hour per day and increases the time by 30 minutes each day, how long will she practice on the seventh day?
2 answers:
Day 1 = 60 mins
On day one she starts of with 1 hour so it will be 1+30x. X being the number of days so by the seventh day Anna would practice for 240 minutes.
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Answer:
Solution given:
<6+24=180[co- interior angle]
<6=180-24=156°
<6=156°
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