Solve the system of equations.
A. {(2.7, 4.1, -4.7)}
B. {(5.4, 4.1, -14.1)}
C. {(2.7, 4.1, 4.7)}
D. {(2.7, -4.1, -4.7)}
Answer: A
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Find the potential function f for the field F.F = -
i - 
j - 
k
A. f(x, y, z) = - 
+ C
B. f(x, y, z) = 
+ C
C. f(x, y, z) = 
+ C
D. f(x, y, z) = 
+ C
Rewrite in exponential form.log5
= -2
A. 
2 = 5
B. 5-2 = 
C. 25 = 
D. 525 = 2
Perform the indicated matrix operations.Let C = 
and D = 
. Find C - 2D.
A. 
B. 
C. 
D. 
Solve the problem.John (whose line of sight is 6 ft above horizontal) is trying to estimate the height of a tall oak tree. He first measures the angle of elevation from where he is looking as 35°. He walks 30 feet closer to the tree and finds that the angle of elevation has increased by 12°. Estimate the height of the tree rounded to the nearest whole number.
A. 90 ft B. 67 ft C. 86 ft D. 61 ft