What is the length of a hypotenuse and short leg of a 30-60-90 triangle with a long leg of 10 square root of 3

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

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55