Raoul makes shell necklaces to sell at a craft fair. The supplies for each necklace cost $3.75. Raoul sells the necklaces for $11.25. What is the percent markup for a shell necklace? will mark brainliest

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g