Solve the system by the elimination method.5x + 5y = -4-20x - 20y = 16
A. {(2, 3)}
B. {(x, y)| 5x + 5y = -4}
C. ?
D. {(3, -5)}
Answer: B
You might also like to view...
Multiply.(x - 7)(x - 8)
A. x2 + 15x + 56 B. x2 + 15x - 56 C. x2 - 15x + 56 D. x2 - 15x - 56
Find the domain of the function.y = 
A. All real numbers except -12 B. (-?, 12) C. (12, ?) D. All real numbers except 12
Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value.f(x) = -x2 + 2x - 6
A. maximum; 1 B. minimum; 1 C. minimum; - 5 D. maximum; - 5
Find the requested long-range probabilities based on the transition matrix or data given.In one town there are only two cello teachers. In a given semester, the probability that a student will switch from Carol Mosely to Betty Roberts is 0.5 The probability that a student of Betty Roberts will switch to Carol Mosely is 0.1. Find the long-range prediction for the proportion of students with each teacher.
A. [0.167 0.833] B. [0.475 0.525] C. [0.833 0.167] D. [0.500 0.500]