Quadrilateral ABCD is inscribed in a circle with ?B opposite ?D. If m?C = 75° , find m?A.

What will be an ideal response?


105°

Mathematics

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For the following equation, graph y = f1(x) and y = f2(x) on the same screen on your calculator. From the graphs, make a conjecture as to whether the equation is an identity. If so, prove your conjecture. = 

What will be an ideal response?

Mathematics

Find the exact value of the expression.cos  cos  - sin  sin 

A. 0
B. 1
C. -1
D.

Mathematics

Solve the problem.An economist predicts that the buying power B(x) of a dollar x years from now will decrease according to the formula B(x) = 0.61x. How much will today's dollar be worth in 7 years? Round the answer to the nearest cent.

A. $0.03 B. $4.27 C. $3.28 D. $0.71

Mathematics

Divide and simplify. ÷ 

A.
B.  
C.
D. (z + 3)(z - 8)

Mathematics