On a typical summer evening the temperature was 90°f at 7 pm. at 8 am the next morning the temperature was 70.5 degrees fahrenheit. what is the average rate of change in temperature? estimate what the temperature was at midnight.

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out

When you find the area of a triangle do you use in. or in2

Among the most famous of all meteor showers are the perseids, which occur each year in early august. in some areas the frequency of visible perseids can be as high as 40 per hour. given that such sightings are poisson events, calculate the probability that an observer who has just seen a meteor will have to wait at least five minutes before seeing another.