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.]

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:

the answer is vanilla

step-by-step explanation:

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d