Aalone can do a piece of work in 8 days . a and b together can finish the same work in 6 days .if b alone is doing the work , how long will he take

Can someone check my answer? you

Joey is asked to name a quadrilateral that is also a rhombus and has 2 pairs of parallel sides. should be his answer

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z