Use Cramer's rule to solve the linear system.2x + 3y = 25x + y = -21
A. (5, -4)
B. (-4, -5)
C. (-5, 4)
D. (4, -5)
Answer: C
Mathematics
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Find the limit, if it exists.
A. 1/3 B. 0 C. Does not exist D. 3
Mathematics
Translate using numbers and symbols.nine times the sum of x and four
A. 9 ? x ? 4 B. 9(x + 4) C. (9 + x) ? 4 D. 9 ? x + 4
Mathematics
Factor completely.x3y + 10x2y2 + 16xy3
A. xy(x + 8y)(x + 2y) B. y(x + 8y)(xy + 2y2) C. x(xy + 8y2)(x + 2y) D. xy(x2 + 10x + 16y2)
Mathematics
Find the unknown number in the proportion. Write your answer as a whole number or a mixed number if possible.
= 
A. x = 
B. x = 
C. x = 1
D. x = 1
Mathematics