Simplify the expression.12 + 23 ? 11
A. 287
B. 46
C. 265
D. 385
Answer: C
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Prove that the equation is an identity.tan x + cot x = sec x csc x
What will be an ideal response?
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.logb 
A. logbx + 5logby + 2logbz B. logbx + logby5 - logbz2 C. logbx + logby5 + logbz2 D. logbx + 5logby - 2logbz
Solve the problem.All locations of a given latitude are collectively referred to as a circle of latitude or parallel because they lie in a plane parallel to the equator. Using 3960 miles for the radius of the earth, find the radius of the 59th parallel (the circle formed by all points on the earth with a latitude of 59°). Round your answer to the nearest mile.
A. 2040 mi B. 7689 mi C. 1958 mi D. 3394 mi
Solve the system of equations. x + y + z = 1 x - y + 4z = -132x + y + z = 5
A. (4, 1, -4) B. (-4, 4, 1) C. (1, 4, -4) D. (-4, 1, 4)