Perform the indicated operation. Write the result in the form a + bi.(5 + 4i) - (-7 + i)
A. -2 + 5i
B. 12 + 3i
C. 12 - 3i
D. -12 - 3i
Answer: B
Mathematics
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Find the effective annual interest rate for the given nominal annual interest rate. Round your answers to the nearest 0.01%.4% compounded semiannually
A. 4.06% B. 4.07% C. 4.04% D. 4.00%
Mathematics
Given f(x) and g(x), find the composition.f(x) = 1 + 4x; g(x) = 
Find (f ? g)(-4).
A. 0
B. - 
C. 
D. Undefined
Mathematics
Use an identity to write the expression as a single trigonometric function or as a single number.2 cos2 22.5° - 1
A. 
B. 
C. 
D. 
Mathematics
For the measured quantity, state the set of numbers that is most appropriate to describe it. Choose from the natural numbers, integers, or rational numbers.Hat sizes
A. Integers B. Rational numbers C. Natural numbers
Mathematics