If bianca is trying to find the area of this rectangle. she already measured one side 10cm. witch other length(s) could she measure to use in her area calculation? explain your reasoning

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd