the lifetime of xrt tired is normally distributed with mean of 45,000 miles and a standard deviation of 2,500 miles. what percentage of tires will fall between 40,000 and 50,000 miles?

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

In 2000 the average price of a football ticket was $48.28. during the next 4 years, the proce increased an average of 6% each year.a) write a model giving the average price (p), in dollars, of a ticket (t) in years after 2000.b) graph the model. estimate the year when the average ticket price was about $60