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.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)