His per cent error is 16.¯^6%
Explanation:
Trent estimated his time to be 90m but the Actual time was 75m
Error was 90m−^75m=15m
A Fractional error was then 15m90m
So % error is 1590 ×100=1006%=16.¯^6%
Polygon area = (# of sides) * (side length) * (apothem) / 2
polygon area = 6 * 16 *
<span>
<span>
<span>
13.8564064606
</span>
</span>
</span>
/ 2
polygon area =
<span>
<span>
<span>
665.1075101088
</span>
</span>
</span>
<span><span>
square inches
</span>
</span>
<span>160 minutes.
The formula for Kristi's bill is (6.95 plus 0.07 per minute for a total of 18.15)
6.95 + 0.07m = 18.15
Subtract 6.95 from both sides
0.07m = 11.20
Divide both sides by 0.07
m = 11.20 / 0.07 = 160
So Kristi used 160 minutes.</span>