Find the area of an equilateral triangle that has an inscribed circle with an area of 50 pi cm², and a circumscribed circle with an area of
200pi cm^2.

Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Amotorboat maintained a constant speed of 12 miles per hour relative to the water in going 45 miles upstream and then returning. the total time for the trip was 8.0 hours. use this information to find the speed of the current.