Jack runs at an average speed of 4 miles for one hour. He then cycles 6 miles at 12 miles per hour. find his average speed for t
he whole journey.
1 answer:
He ran 4 miles per hour for one hour, which means he ran 4 miles.
He cycled 6 miles at 12 miles per hour, which means he cycled for one half an hour.
His total miles was 4 + 6 = 10 total miles.
His total time was 1 hour + one half an hour = 1.5 hours.
His average speed is total distance divided by total time:
10 / 1.5 = 6 2/3 miles per hour.
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Answer:
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Step-by-step explanation:
3^x(1+5)=54
3^x.6=54
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3^x=3^3
x=3
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No because say b equals 3 then it would be 24 plus 6 equals 90 and it actually equals 30. I THINK