Solve the problem.You have 280 feet of fencing to enclose a rectangular region. Find the dimensions of the rectangle that maximize the enclosed area.
A. 70 ft by 70 ft
B. 140 ft by 35 ft
C. 140 ft by 140 ft
D. 72 ft by 68 ft
Answer: A
Mathematics
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Use factoring techniques to solve the equation.x2 + x - 20 = 0
A. {-5, 4} B. {-5, -4} C. {-4, 5} D. {4, 5}
Mathematics
Find the standard deviation. Round to one more place than the data.4, 2, 13, 8, 10, 11, 7, 20, 20
A. 6.8 B. 1.3 C. 6.0 D. 6.3
Mathematics
Perform the indicated operation. Write the result in the form a + bi.(9 - 3i)(2 + 4i)
A. 30 - 30i B. 30+ 30i C. 42 + 6i D. 6 - 42i
Mathematics
Find 
.ln 8xy = ex+y
A. 
B. 
C. 
D. 
Mathematics