Is the ratios : equivalent to : ? *

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

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

Find the value of x. give reasons to justify your solutions! c ∈ ae