Use the substitution method to solve the system.8x + 5y = 68-4x + 2y = -16
A. (6, 5)
B. (6, 4)
C. (5, 5)
D. No solution
Answer: B
Mathematics
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Determine if the given value of the variable is a solution to the equation.3x + 2 = 25; 7
A. solution B. not a solution
Mathematics
Provide an appropriate response.Evaluate: log7
A. 7 B. -2 C. -7 D. 2
Mathematics
Write an equivalent expression with positive exponents and, if possible, simplify.4q-16/17
A. 
B. 
C. 
D. 4q17/16
Mathematics
Solve the problem.Poiseuille's law states that the resistance, R, for blood in a blood vessel varies directly as the length of the vessel, L, and inversely as the fourth power of its diameter, d. This can be written as an equation 
where k is a constant. Find 
Round your answer to the nearest whole number.
A. about 16.67k B. about 630k C. about 61.7k D. about 617k
Mathematics