Afair coin is tossed 4 times. find the probability of obtaining exactly 2 heads

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

How does a low unemployment rate affect a nation's economy? a. the nation has a higher number of productive resources. b. the nation can spend more money on for unemployed people. c. the nation can save money by paying lower salaries to a large workforce. reset

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73