Seattle, wa and san francisco, ca lie on the same longitudinal line. san francisco is at 38° latitude and seattle is at 47° latitude. if the earth is a sphere of radius 4000 miles, use arc length to find the distance between the cities. [use π = 3.14, and round to the nearest mile.]a) 628 miles b) 725 miles c) 786 miles d) 841 miles

Step 1.

Calculate measure of angle α:

Step 2.

Calculate what fraction of the angle 360° is the angle α:

Step 3.

Calculate the circumference of the Earth (circle):

Step 4.

The length of arc is equal 1/40 of the circumference:

its 69.420

step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,