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Josh paid for three books with two $20 bills. He received $1 in change. Each book was the same price. How much did each book cost?
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Which of the following vectors are orthogonal to (2,1)? check all that apply
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1. suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6. a. label the curve: show the mean and the value at each standard deviation: b. if angelica scored a 76 on the test, what is her z-score? (draw her score on the curve above and label) c. what percent of students did angelica score higher than? how can you tell? d. if 185 students took the test, how many students scored higher than angelica?
Answers: 3
Josh paid for three books with two $20 bills. He received $1 in change. Each book was the same price...
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