Mathematics, 26.06.2019 12:30 indexes06
Acredit card company offers a cash back program on transactions. for every transaction over $100, the customer gets $3 back. for every transaction $100 or less the customer gets $1 back. the customer made 18 transactions in all and the total number of dollars given back was $28.write and solve a system of equations to find the number of transactions of each type using the following let statements : x= transactions over 100 y= transactions under 100 ? x +? y = 28 -7x+y=32
Answers: 1
Mathematics, 21.06.2019 17:30
Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression
Answers: 1
Mathematics, 21.06.2019 19:00
Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !
Answers: 1
Mathematics, 21.06.2019 21:40
In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.
Answers: 3
Mathematics, 21.06.2019 23:00
According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.
Answers: 1
Acredit card company offers a cash back program on transactions. for every transaction over $100, th...
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