Solve the problem.A farmer has 720 m of fencing. Find the dimensions of the rectangular field of maximum area that can be enclosed by this amount of fencing.
A. 180 m by 540 m
B. 72 m by 288 m
C. 170 m by 190 m
D. 180 m by 180 m
Answer: D
Mathematics
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Find the unit tangent vector of the given curve.r(t) = 
i + 
j - 5tk
A. T = 
i + 
j - 
k
B. T = 
i + 
j - 
k
C. T = 
i + 
j - 
k
D. T = 
i + 
j - 
k
Mathematics
Factor.12c5 - 60c3
A. 12c3(c2 - 5) B. 12c2(c3 - 5c) C. 6c3(2c2 - 5) D. 12c5(c - 5)
Mathematics
Find the weighted mean of the numbers in the table. Round to the nearest tenth.A class of 44 students took a 10-point quiz. The frequency of scores is given in the table. 
A. 7.3 points B. 7.5 points C. 7.6 points D. 7.8 points
Mathematics
Find the slope and the y-intercept of the given line.y = 3x - 5
A. -5, (0, 3) B. 5, (0, 3) C. 3, (0, -5) D. 3, (0, 5)
Mathematics