Use properties of exponents to simplify the expression. Express answer in exponential form.93 ? 9-5
A. -98
B. 9-15
C. 9-2
D. -9-2
Answer: C
Mathematics
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For what values of x does the series converge conditionally?
A. x = -1 B. x = 1 C. x = ±1 D. None
Mathematics
Solve by the method of elimination by substitution.0.4x + 0.6y = -2.6x - 0.5y = -0.5
A. x = -0.2, y = -0.3 B. x = -2, y = -3 C. x = -3, y = -2 D. Inconsistent
Mathematics
Determine whether the function satisfies a Laplace equation.f(x, y) = cos x sin(-y)
A. Yes B. No
Mathematics
Find the exact value of the expression, if possible. Do not use a calculator.cos-1 
A. - 
B. 
C. 
D. 
Mathematics