Use the substitution-of-variable technique to solve the system analytically.
+ 
= - 
- 
= - 
A. {(9, -5)}
B. {(-9, 5)}
C. 
D. {(-5, 9)}
Answer: A
Mathematics
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Answer the question.What is needed to determine the congruency of two rectangles?
Fill in the blank(s) with the appropriate word(s).
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Determine if the following is an identity.
= 
A. Identity B. Not an identity
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Use the Leading Coefficient Test to determine the end behavior of the polynomial function. Then use this end behavior to match the function with its graph.f(x) = -8x3 + 3x2 + 4x - 1
A. rises to the left and falls to the right
B. falls to the left and rises to the right
C. rises to the left and rises to the right
D. falls to the left and falls to the right
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Find the derivative of the following function.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics