Solve the system by elimination. x2 + y2 = 20y x2 = 10y
A. (0, 0), (10, 10), (-10, 10)
B. (10, 10), (-10, 10), (10, -10), (-10, -10)
C. (0, 0), (
, 10), (-
, 10)
D. (0, 0), (10, 10), (
, 1), (-
, 1)
Answer: A
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Determine convergence or divergence of the series.
A. Diverges B. Converges
The function f is one-to-one. State the domain and the range of f and f-1. Write the domain and range in set-builder notation.f(x) = 
A. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
B. f(x): D = 
, R = 
;
f-1(x): D is all real numbers, R = 
C. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
D. f(x): D = 
, R is all real numbers;
f-1(x): D is all real numbers, R = 
Find T, N, and B for the given space curve.r(t) = (cosh t)i + (sinh t)j + tk
A. T = - 
(tanh t sech t)i + 
j + 
(sech t)k; N = (-sech t)i - (tanh t)k; 
B. T = 
(tanh t sech t)i + 
j + 
(sech t)k; N = (sech2 t)i - (sinh t)k; 
C. T = - 
(tanh t)i + 
j + 
(sech t)k; N = (-sech t)i - (sinh t)k ; 
D. T = 
(tanh t)i + 
j + 
(sech t)k; N = (sech t)i - (tanh t)k; 
Provide an appropriate response.Perform the indicated operation, leaving the answer in lowest terms: 7 × 
=
A. 
B. 
C. 2
D. 