An online store receives customer satisfaction ratings between 0 and 100, inclusive. in the first 10 ratings the store received, the average(arithmetic mean) of the ratings was 75. what is the least value the store can receive for the 11th rating and still be able to have an average of at least 85 for the first 20 ratings?

The ancestors of horses possessed feet with five digits. over time, with the development of grasslands, the digits fused and formed hooves. what evolutionary advantage did this transformation serve? a. it allowed them to climb rocky surfaces with ease. b. it allowed them to graze better. c. it enabled them to run faster from predators. d. it let them see clearly through the grasslands. e. it made them taller.

Astudent randomly draws a card from a standard deck and checks to see if it's his favorite suite he then returns the cards to the deck

When amy exercises in her fitness center for 1 hr she burns a total of 475 calories.if she burns 9 calories a minute jogging on the treadmill and then burns 6.5 calories a minute pedaling on the stationary bicycle how many minutes of the hour does she spend exercising on the bicycle?