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How can properties of similarity and congruence of triangles be applied to writing proofs about other figures?

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.