Jacob bought two types of pens: blue pens cost $0.60 each and red pens each cost d times as much as a blue pen. If 3 blue pens and 6 red pens was $10.80, what is the value of d

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Select the graph of the solution. click until the correct graph appears. |x| = 3

You make a necklace using blue, purple, and green beads in a ration of 1: 1: 2. you use the total of 168 beads. how many green beads in the necklace?