Mathematics, 25.03.2021 18:50, jeffcarpenter
A system of equations is shown below. Equation 1: 2 x − y = − 8 Equation 2: x + 2 y = 6 To begin solving the system of equations, Equation 1 is multiplied by a value of 2 to create Equation 3. Equation 3: 4 x − 2 y = − 16 Equation 2: x + 2 y = 6 Which procedure could best be used to eliminate one of the variables?
Answers: 3
Mathematics, 21.06.2019 19:00, datands
Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)
Answers: 2
Mathematics, 21.06.2019 20:00, cferguson
Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?
Answers: 1
Mathematics, 21.06.2019 23:30, bbby2
Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.
Answers: 1
A system of equations is shown below. Equation 1: 2 x − y = − 8 Equation 2: x + 2 y = 6 To begin sol...
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