Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to three decimal places. log60.771
A. -0.113
B. -0.145
C. -6.890
D. 7.782
Answer: B
Mathematics
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Simplify.
? 
A. 
B. - 
C. 
D. - 
Mathematics
Use properties of exponents to simplify the expression. Express answers in exponential form with positive exponents only. Assume that any variables in denominators are not equal to zero.(-2x4y-4)(-5x4y2)
A. 
B. 10x6y8
C. 10xy8
D. 
Mathematics
Solve the equation.5x - 4 = x - 20
A. 4
B. -4
C. - 
D. - 
Mathematics
Simplify the expression by using the order of operations.5 ? 3 - 7
A. 105 B. 8 C. 20 D. 22
Mathematics