The principal at Marina Middle School wants to determine if the 120 students in the seventh grade prefer to visit the aquarium or the science museum for their end-of-year trip. Select All The sets of people that would be a representative sample of the population. 20 sixth-grade students, 20 seventh-grade students, and 20 eighth-grade students

10 seventh-grade boys and 10 seventh-grade girls

25 seventh-grade students

15 seventh-grade boys and 5 teachers

25 students from the school

At his new job, jeremiah can choose an hourly rate of $9 plus a $50 weekly bonus for opening the store, or an hourly rate of $10 per hour with no opening bonus. the equations model his salary options. y = 9x + 50 y = 10x

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below: