If 1/a, 1/b, 1/c are in Arithmetic Progress, show that 2ac/a+c.

When ∆rst is translated 4 units down, what are the apparent coordinates of t’? give 15 points

Carmen begins her next painting on a rectangular canvas that is 82.7 cm long and has a area of 8,137.68 cm2. will the painting fit in a frame with an opening that is 82.7 cm long and 95 cm wide? explain

List the sides of δrst in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12