bailey makes 15 dollars a week babysitting and she has 250 dollars in her bank account. brett makes 20 dollars per week mowing lawns and has 200 dollars in his bank account. how many weeks will it take for brett and baily to have the same anount of money in their bank account?

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)

E. which of the following is not a possible probability? a. 25/100 b. 1.25 c. 1 d. 0