The length of time (in years) until a particular radioactive particle decays is a random variablet with probability density function defined by f(t) = 10e ^- 10t for t in (0, infinity). Find the mean of the distribution, the standard deviation of the distribution, and the probability that the
random variable is between the mean and 1 standard deviation above the mean.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Find all solutions for 2y - 4x =2 y = 2x + 1 site: socratic.org

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?