Mathematics, 27.06.2019 13:30 fefe57
The high school courtesy club bought red and black ink pens for teacher appreciation day. the club bought 75 pens in all. each black pen cost $1.75, and each red pen cost $2.00. the club spent $137 altogether for the pens. how many black pens did the club buy? 13 23 48 52
Answers: 1
Mathematics, 21.06.2019 19:00
Find the equation of a line whose slope is 2/5 and y- intercept is 2.write your answer in the form 1) ax+by+c=02) x/a+y/b=1
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Mathematics, 21.06.2019 22:30
Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.
Answers: 1
Mathematics, 21.06.2019 22:30
60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?
Answers: 1
Mathematics, 21.06.2019 22:30
What is the point slope form of a line with slope -5 that contains point (2,-1)
Answers: 1
The high school courtesy club bought red and black ink pens for teacher appreciation day. the club b...
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