Mathematics, 12.03.2021 20:00, manman71
The work of a student trying to solve the equation 2(2x β 3) = 6 + 2x + 4 is shown below:
Step 1: 2(2x β 3) = 6 + 2x + 4
Step 2: 4x β 3 = 10 + 2x
Step 3: 4x β 2x = 10 + 3
Step 4: 2x = 13
Step 5: x = 6.5
In which step did the student first make an error and what is the correct step? (4 points)
Group of answer choices
Step 3: 4x + 2x = 10 + 3
Step 2: 4x β 3 = 2 + 2x
Step 3: 4x β 2x = 10 - 3
Step 2: 4x β 6 = 10 + 2x
Answers: 2
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Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)
Answers: 3
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Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ
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Answers: 1
The work of a student trying to solve the equation 2(2x β 3) = 6 + 2x + 4 is shown below:
Step 1: 2...
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