What pair of numbers has a sum of 1 and a difference of 9? x y x + y = 1

x y x - y = 9

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost

In the diagram, a building cast a 35-ft shadow and a flagpole casts an 8-ft shadow. if the the flagpole is 18 ft tall, how tall is the building? round the the nearest tenth.