Perform the indicated operations and, if possible, simplify. Recall that multiplications and divisions are performed in order from left to right.
÷ 
? 
A. r - s
B. 
C. r + s
D. 
Answer: A
Mathematics
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Use integration by parts to establish a reduction formula for the integral.
A. 
= n xn-1 e- x2 + 2n 
B. 
= - 
xn e- x2 + 
C. 
= - 
xn-1 e- x2 + 
D. 
= - 2xn-1 e- x2 - 2(n - 1) 
Mathematics
Graph the exponential function whose equation is given. Start by using -2, -1, 0, 1, and 2 for x and finding the corresponding values for y.f(x) = 
x
A. 
B. 
C. 
D. 
Mathematics
Name the place held by the specified digit in the given number.4 in the number 189,247
A. thousands B. ones C. hundreds D. tens
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Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = -x2
A. 
B. 
C. 
D. 
Mathematics