This world map shows elevation and scale in miles and kilometers. in miles, what is the approximate distance between the southern tip of south america and the southern tip of africa? 4,600 miles 7,000 miles 8,900 miles 12,000 miles

The answer would be 4,600 miles is the estimated distance between the southern tip of Africa and the southern tip of America. But this shows a slight inconsistency or discrepancy since the distance is contingent on the exact start and stop positions.

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27