An unprepared student makes random guesses for 6 multiple choice questions that have selections a - e. find the probability that there is at least one correct answer.

 P(at least 1 ) = 1 - P(exactly none) = 1 - (4/5)^6 = .738
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1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!

X=3 and y=4 is the answer