Express the unit vector as indicated.Express the unit vector u = (cos ?)i + (sin ?)j in the same direction as the vector 5i + 7j.
A. 43.01i + 60.22j
B. 
i + 
j
C. 370i + 518j
D. 
i + 
j
Answer: D
Mathematics
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Write the whole number in standard form.Forty thousand, seven hundred fifty-one
A. 40,051 B. 40,751 C. 4751 D. 400,751
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What part of the set of objects is shaded?
A. 
B. 
C. 
D. 
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Determine whether the test point is a solution to the linear inequality.(-5, 2), -x - 3y ? -1
A. Yes B. No
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Simplify the expression. Assume that all variables are positive and write your answer in radical notation.
? 
A. 
B. 
C. 
D. 
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