Element X decays radioactively with a half life of 10 minutes. If there are 960 grams
of Element X, how long, to the nearest tenth of a minute, would it take the element to
decay to 20 grams?

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points