Answer:
x=-3,5
Step-by-step explanation:
8x + 4y = 20
4y = 20 - 8x
y = 5 - 2x
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:


<h3>Answer: A) 628 miles</h3>
Answer:
90°
Step-by-step explanation:
because from south to east is half of north which makes it 90°