Mathematics, 08.01.2020 07:31, nataliamontirl6079
The temperature of a room , y, is based on the number of hours the a/c is on , x. if the temperature is already 74 degrees and it drops/decreases by 3 degrees each hour, write an equation to represent ?
part b: what will the temperature be after 4 hours ?
part c: after how many hours is the temperature 50 degrees ?
Answers: 3
Mathematics, 21.06.2019 22:30, 713073
Which statements about the system are true? check all that apply. y =1/3 x โ 4 3y โ x = โ7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same yโintercept. the equations represent the same line. the lines intersect.
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Mathematics, 22.06.2019 00:00, emmagbales
Given the diagram below, michael writes, "segment ac is congruent to segment ac." which of the following reasons allow him to write this statement?
Answers: 1
Mathematics, 22.06.2019 01:30, kadinmorgan
Acell phone company offers two plans to its subscribers. at the time new subscribers sign up, they are asked to provide some demographic information. the mean yearly income for a sample of 40 subscribers to plan a is $45,000 with a standard deviation of $9,200. for a sample of 25 subscribers to plan b, the mean income is $64,300 with a standard deviation of $7,100. at the 0.025 significance level, is it reasonable to conclude the mean income of those selecting plan b is larger? assume unequal population standard deviations. hint: for the calculations, assume the plan a as the first sample. what is the decision rule? (negative amount should be indicated by a minus sign. round your answer to 3 decimal places.) compute the value of the test statistic. (negative amount should be indicated by a minus sign. round your answer to 2 decimal places.) what is your decision regarding h0 ? reject h0 fail to reject h0 compute the p-value. less than 0.01 between 0.01 and 0.025 between 0.025 and 0.05 between 0.05 and 0.10 greater than 0.10
Answers: 3
The temperature of a room , y, is based on the number of hours the a/c is on , x. if the temperature...
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