A girl is 6 feet tall and casts a shadow that is 4 feet long. A building casts a shadow that is 40
feet long. How tall is the building?

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

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?

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?