Find the solution to the following system by substitution, X+ y = 16 y = 3x + 4 A. (5,19) B. (13,3) C. (3.13) D. (4.16)
2 answers:
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Answer:
The third side is around 58.043
Step-by-step explanation:
Use the law of cosines:
Plug in the two sides we know (into a and b) and the angle we know (into angle C).
Thus:
Use a calculator:
(Note: Make sure you're in Degrees mode.)