A spinner has five sections, labeled A, B, C, D, and E. The spinner is spun 45 times, and the results are recorded in the table.
What is the experimental probability of the spinner’s landing on C? Round to the nearest percent, if necessary. Outcome A B C D E Number of trials 6 10 8 12 9 A. 8% B. 18% C. 20% D. 24%
A,B,C,D,E are 5 letters so you must divide 45 by 5. Equaling 9. so 9 over 45 in fraction form. But you need to simplify it so you divide the numerator and denominator by 3. Therefor creating 3 over 15 in fraction form. Then you divide both again by 3. Creating 1 over 5 of course in fraction form. Finally you divide 1 by 5 Equaling .2 or in another form .20. So you answer is .20
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To find how much they bought each book for, you must divide by 10. 74 divided by 10 is 7.4. Then if they are selling them for 20% more, then multiply 7.4 and 1.2 Your answer is $8.80