Mathematics, 26.03.2021 21:40, jaimon8729
A cell phone company charges $40 per month for unlimited calling, and $0.20 per text message sent. If t represents the number of text messages Roxy sent last month, which expression represents the cost of her bill last month before any taxes or additional fees?
40 β 0.2t
(40 + 0.2)t
40 + 0.2t
(40 β 0.2)t
Answers: 2
Mathematics, 21.06.2019 14:30, logan541972
Factor. 8x2y2 β 4x2y β 12xy 4(8x2y2 β x β 12xy) 4(2xy β 4x2y β 12xy) 4x2y2(2xy β xy β3) 4xy(2xy β x β 3)
Answers: 2
Mathematics, 21.06.2019 15:20, kylabreanne120
(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *β¦ 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, β¦., 1+2+3+β¦ + 99, and 1+2+3+β¦ + 100
Answers: 1
Mathematics, 21.06.2019 20:00, 4804397217
A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?
Answers: 2
Mathematics, 21.06.2019 20:30, cogger9348
3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.
Answers: 1
A cell phone company charges $40 per month for unlimited calling, and $0.20 per text message sent. I...
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