The half-life of Einsteinium 253 is 20.5 days. If you start with 5g of Es-253, how many grams will you have after 31 days?

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

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?