Write the number in scientific notation as it would be displayed on a calculator.0.000639
A. 6.39E4
B. 6.39E-5
C. 6.39E-3
D. 6.39E-4
Answer: D
Mathematics
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Find the average value of the function f over the region R.f(x, y) = 5x + 10yR is the triangle with vertices 
, 
, and 
.
A. 20
B. 
C. 5
D. 
Mathematics
Perform the indicated operation.-6(-10)
A. 60 B. 66 C. 70 D. -66
Mathematics
Perform the indicated operation.
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Think of each of the following processes as a function designated by the indicated letter. f: Hammering a nail into g: Removing a nail from Describe the function (f ? f)(board).
What will be an ideal response?
Mathematics