Some businessmen and businesswoman were surveyed about their appointment calendars. of the surveyed business people, 139 said they keep their business appointments on an electronic calendar, 56 keep their appointments on a paper calendar, and 23 keep both a paper calendar and an electronic calendar. three respondents do not keep a calendar.

What is the difference between regular convex and concave polygons

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

The angle of elevation from point a to the top of the cliff is 38 degrees. if point a is 80 feet from the base of the cliff , how high is the cliff ?