Amy's math notebook weighs 1/2 pound her science notebook weighs 7/8 and her history notebook weighs 3/4 pound what are the weights in order from lightest to heaviest

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

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

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.