Step-by-step explanation:
using trig, tangent is equal to opposite over adjacent.
in this case, the angle is 45, opposite is 7, and adjacent is a.
thus tan 45° = 7/a
solve for a to get a = 7/tan 45° = 4.32
<u>Part 1</u>: Correct.
<u>Part 2</u>
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-2x+8y-3
Hope this helps! :)
Answer:
x = 122
