Find the circumference of the circle whose radius or diameter is given. Use 
or 
as indicated. d = 9 mi. Use ? ? 3.14.
A. C ? 63.59 mi
B. C ? 28.26 mi
C. C ? 56.52 mi
D. C ? 14.13 mi
Answer: B
Mathematics
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Find the domain of the given function f and find where it is increasing and decreasing, and also where it is concave upward and where it is concave downward. Identify all extreme values and points of inflection. Then sketch the graph of y = f(x). f(x) = e-x2/3
What will be an ideal response?
Mathematics
Given r(t) = 7t²i+4t³j.
 Figure 3.png)
Mathematics
A. 
B. 12
C. 1
D. 
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.3
+ 7
A. 76
B. -22
C. 22
D. -76
Mathematics