Solve.In a triangle, the measure of the first angle is four times the measure of the second angle. The measure of the third angle is 12 degrees more than the second angle. What is the measure of the first angle?

A. 32°
B. 28°
C. 40°
D. 112°


Answer: D

Mathematics

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Give the specific equation relating the variables after evaluating the constant of proportionality for the given set of values.A varies jointly as F and G and inversely as H, and A = 20 when   and 

A. A = 
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D. A = 

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Find the reference angle for ?. ? = 

A.
B.
C.
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Use the formula for Sn to find the sum for the geometric sequence.3, -9, 27, -81, 243

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Mathematics