Mathematics, 01.09.2019 21:00, kittey7854
Aconstruction firm is trying to decide which of two models of a crane to purchase. model a costs $100,000 and requires $4,000 per year to maintain. model b has an initial cost of $78,000 and a maintenance cost of $13,000 per year. for how many years must model a be used before it becomes more economical than b? (round your answer to one decimal place.)
Answers: 1
Mathematics, 21.06.2019 15:00, saucyboyFredo
There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.
Answers: 3
Mathematics, 21.06.2019 18:40, ferny5106
Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form: science fiction books to history books 2. write the ratios as fractions: dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.
Answers: 1
Mathematics, 21.06.2019 20:00, codyshs160
The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212
Answers: 1
Aconstruction firm is trying to decide which of two models of a crane to purchase. model a costs $10...
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