Let z vary jointly with x and y. Find the constant of variation k. Then, use 
to find z when x = 5 and y = 7.z = 69,020 when x = 58 and y = 119
A. k = 10; z = 120
B. k = 
; z = 120
C. k = 
; z = 350
D. k = 10; z = 350
Answer: D
Mathematics
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Convert to an exponential equation.log7 49 = 2
A. 749 = 2 B. 492 = 7 C. 27 = 49 D. 72 = 49
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Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = i + 2j, w = 3i + j
A. v1 = 
(3i + j), v2 = - 
i + 
j
B. v1 = 
(3i + j), v2 = 
i + 
j
C. v1 = 
(3i + j), v2 = 
i + 
j
D. v1 = 
(3i + j), v2 = - 
i + 
j
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Replace the ? with the inequality symbol <, >, or =.|-30| ? |25|
A. < B. > C. =
Mathematics
Write the improper fraction as a mixed or whole number.
A. 6
B. 5
C. 5
D. 4
Mathematics