There are 77 students in the student council. the ratio of girls to boys is 7: 4. how many girls are in the student council?

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?

50 points 1- 24=-v/3 2- -20=-7+w 3- )=32