A plane leaves an airport X, 20.6°E and 36.8°N, and flies due south
along the same longitude for 8 hours at the
rate of 1000 km/h to another airport
Y, 20.6°E and 6°S. The plane then flies
west to another airport Z for 8 hours at the
same speed. Calculate to the nearest
degree, (a) the value of 0, (b) the longitude
of Z. (Take the radius of the earth to be
6400 km)

true statements:

a) x + y = y + x   ⇒ commutative property of addition

b) (x * y) * z = x * (y * z) ⇒ associative property of multiplication

d) (x + y) + z = x + (y + z) ⇒ associative property of addition

false statements:

c) x - y = y - x   should be: x - y = - y + x

e) (x - y) - z = x - (y - z) should be: (x - y) - z = x - (y + z)

step-by-step explanation:

answer:

125 yards

explanation:

75+50=125. that is my answer