A son is 8 years old. his father is 5 times as old. How old will the father be when he is twice as old as his son?

What is the measure of x, in degrees

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?