If the bases are 1/2 and 1/4, and the height is 1, what is the area?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

Find the power set of each of these sets, where a and b are distinct elements. a) {a} b) {a, b} c) {1, 2, 3, 4} show steps