Expand.
If necessary, combine like terms.
(x+5)(x-5)=(x+5)(x−5)=

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73

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