Line l has equation 2x - 3y = 5. line m passes through the point (3, -10) and is parallel to line l. determine the equation for line m.

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

What is the radius of the cone in the diagram? round your answer to the nearest whole number