The post office is 1- miles west of Vincent's house. The 11
library is 15 miles west of the post office. How far is it from
Vincent's house to the library? Simplify the answer if
possible.

16 miles.

Step-by-step explanation:

Let's define:

Vincent's house is in the position 0 mi in a number line.

We know that the post office is 1 mile west of Vincent's house, if we define west as the positive side of the number line, then the position of the post office is:

0mi + 1mi = 1mi

(position of Vincent's house plus one mile)

And we know that the 11 library is 15 miles west from the post office, then the position of this library is:

1mi + 15mi = 16mi

(position of the post office plus 15 miles)

The distance between Vincent's house and the library is equal to the difference between the positions, where we can remember that the position of Vincent's house is 0mi, and the position of the library is 16mi

Distance = 16mi - 0 mi = 16mi

This means that the library is 16 miles away from Vincent's house.

the answer is 62

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13