Check the answer. If incorrect, give the correct answer.
A. Correct
B. Incorrect; should be 6819 R2
C. Incorrect; should be 6818
D. Incorrect; should be 6819 R1
Answer: A
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Express the given vector as a linear combination of the unit vectors i and j.
A. -5j
B. -5i
C. - 
i - 
j
D. -5i - 5j
Solve the system using Gaussian elimination.
?
?
Please enter your answer in the form x = , y = , z = .
What will be an ideal response?
Use the x-intercepts to find the intervals on which the graph of f is above and below the x-axis.f(x) = (x - 3)2(x + 4)2
A. above the x-axis: (-4, 3) below the x-axis: (-?, -4), (3, ?) B. above the x-axis: (-?, -4), (3, ?) below the x-axis: (-4, 3) C. above the x-axis: (-?, -4), (-4, 3), (3, ?) below the x-axis: no intervals D. above the x-axis: no intervals below the x-axis: (-?, -4), (-4, 3), (3, ?)
Find the mean.Following is a list of rainfall amounts for the past five months. Each amount is the total of rainfall in a month. Calculate the mean. Round to the nearest tenth when necessary. 4.2 in.
5 in.
2 in.
5 in.
1.8 in.
A. 3 in. B. 3.6 in. C. 4.2 in. D. 5 in.