A man driving a minivan leaves his home and travels north 4 miles, then turns right and travels east 14 miles, arriving at his p
lace of work. If a road was made directly from his house to his work, how much shorter would the man's one-way trip to work be?
1 answer:
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Given that:
Consider it is instead of 10 on two places.
is between 3 and 4. So, Beau thinks a good estimate for
is = 3.5.
Solution:
To find , Beau found 3² = 9 and 4² = 16.
He said that since 10 is between 9 and 16.
Since 10 is close to 9, therefore must be close to 3. So, Beau's estimate is high.
Now,
Since, 10 lies between 9.61 and 10.24, therefore must be lies between 3.1 and 3.2.
Therefore, the estimated value of is 3.15.