Solve the system graphically.2x + y = 22x + y = 4
A. 
B. (2, 4)
C. 
D. no solution
Answer: D
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) = xe-7x
What will be an ideal response?
Mathematics
Express the integrand as a sum of partial fractions and evaluate the integral.
dx
A. 
- 
- 
+ C
B. 2 ln 
- 
- 
+ C
C. - 
- 
+ C
D. 
- 
+ C
Mathematics
Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(
- 3
)(
- 3
)
A. 5x - 3
- 3
+ 9
B. 25x2 - 3
- 3
+ 9
C. 5x - 3
- 3
+ 9
D. 5x - 3
+ 9
Mathematics
Evaluate the sum.
?
?
A. 
B. 
C. 
D. 
E. 45
Mathematics