Find the center (h, k) and radius r of the circle with the given equation. x2 + 4x + 4 + (y - 1)2 = 81
A. (h, k) = (-1, 2); r = 81
B. (h, k) = (1, -2); r = 9
C. (h, k) = (-2, 1); r = 9
D. (h, k) = (2, -1); r = 81
Answer: C
Mathematics
You might also like to view...
Factor and simplify the expression.sec4x - 2 sec2x tan2x + tan4x
A. sec2x (1 + tan2x) B. 2 C. sec2x + tan2x D. 1
Mathematics
Use the chart below to answer the question. 
Matt has a budget of $2199. Can he afford to buy the computer for $799 with options (d), (f), and (h)?
A. Yes B. No
Mathematics
Solve the problem.A rectangular carpet has a perimeter of 194 inches. The length of the carpet is 51 inches more than the width. What are the dimensions of the carpet?
A. 74 in. by 23 in. B. 74 in. by 97 in. C. 85.5 in. by 97 in. D. 60 in. by 83 in.
Mathematics
Rewrite.
% as a fraction
A. 
B. 
C. 
D. 
Mathematics