Một nhà chính trị tiến hành khảo sát ngẫu nhiên 400 cử tri thì thấy có 167 cử tri ủng hộ ứng cử viên A. Với độ tin cậy 95% hãy ước lượng khoảng cho tỷ lệ cử tri ủng hộ ứng cử viên A.

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?

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths