Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 3x + 5y = -102x + 4y = -6
A. {(5, -1)}
B. {(-1, 5)}
C. {(1, -5)}
D. {(-5, 1)}
Answer: D
Mathematics
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Solve the problem.The diameter of a tree was 8 in. During the following year, the circumference increased 
About how much did the tree's diameter increase? (Leave your answer in terms of ?.)
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Mathematics
Solve by the method of elimination by substitution. x - 5y = 302x - 5y = 25
A. x = -4, y = -8 B. x = -5, y = -7 C. x = -4, y = -5 D. Inconsistent
Mathematics
Multiply and express the product in lowest terms.- 
? 
A. 
B. 
C. 
D. 
Mathematics
Determine algebraically whether the function is even, odd, or neither even nor odd.f(x) = 
A. Even B. Odd C. Neither
Mathematics