Write the vector v in the form v1i + v2j, given 
and the angle ? that v makes with the positive x-axis.
= 15, ? = 225°
A. - 
i - 
j
B. i - 
j
C. 
i j
D. - 
i + j
Answer: A
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A. 49a2 - 168a + 144 B. 49a2 + 144 C. 7a2 + 144 D. 7a2 - 168a + 144
Find values of x and y, if any, that will make the matrices equal.
?
?Please enter your answer as two numbers, separated by a comma.
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Solve the problem.Alan is building a garden shaped like a rectangle with a semicircle attached to one short side along its diameter. The diameter of the semicircle is equal to the width of the short side of the rectangle. If he has 60 feet of fencing to go around the garden, what dimensions will give him the maximum area in the garden?
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