a builder is repairing a length of fence 3 1/3 yards long. he is using a .80 pound box of nails. when he finishes, he notices that he used half the box of nails. how many pounds of nails did the builder use for each yard of fence?​

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?