Solve the system by the substitution method.x2 + y2 = 41x - y = 1
A. {(5, -4), (4, -5)}
B. {(-5, 4), (-4, 5)}
C. {(5, 4), (-4, -5)}
D. {(-5, -4), (-4, -5)}
Answer: C
Mathematics
You might also like to view...
Find all the second order partial derivatives of the given function.f(x, y) = xye-y2
A. 
= ye-y2; 
= 2xye-y2(y2 - 1); 
= 
= e-y2(1 - y2)
B. 
= 0 ; 
= 2xye-y2(2y2 - 3); 
= 
= e-y2(1 - y2)
C. 
= 0; 
= 2xye-y2(2y2 - 3); 
= 
= e-y2(1 - 2y2)
D. 
= ye-y2; 
= 2xye-y2(2y2 - 6); 
= 
= e-y2(1 - 2y2)
Mathematics
Decide whether or not the functions are inverses of each other.f(x) = 2x - 7, g(x) = 
A. Yes B. No
Mathematics
Solve the equation for y.-8x + 7y = 9
A. y = 56x + 63
B. y = 
C. y = 
D. y = 
Mathematics
Multiply the binomials.(x - 8y)(x - 2y)
A. x2 - 13xy + 16y2 B. x2 - 10xy + 16y2 C. x - 10xy + 16y D. x2 - 10xy - 10y2
Mathematics