Evaluate the double integral.
A. 
B. 
C. 
D. 
Answer: D
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Translate the problem to a system of equations, then solve using Cramer's Rule.Twice the water flow in the hot-water pipe is the same as three times the flow in the cold-water pipe. The combined flow is 1200 liters per hour. What is the flow in each pipe?
A. 600 liters/hr hot, 400 liters/hr cold B. 400 liters/hr hot, 600 liters/hr cold C. 720 liters/hr hot, 480 liters/hr cold D. 480 liters/hr hot, 720 liters/hr cold
Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = -3i + 5j,
w = 2i + j
A. v1 = - 
i - 
j, v2 = 
i + 
j
B. v1 = - 
i - 
j, v2 = - 
i + 
j
C. v1 = - 
i - 
j, v2 = - 
i + 
j
D. v1 = - 
i - 
j, v2 = - 
i + 
j
Consider the language that consists of all strings of 0’s and 1’s in which the number of 1’s is evenly divisible by 4. Find a regular expression that defines this language.
What will be an ideal response?
Find the domain of the function.f(x) = log (x - 4)
A. x > 0 B. x > -4 C. x > 1 D. x > 4