Solve each system by elimination.3) 9x - 5y = 13- 4x + 5y = 22
1 answer:
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Answer:
<h2>240.34</h2>Step-by-step explanation:
ΔA = 90° - 31°
= 59°
sin A = perpendicular ÷ base
sin 59° = 400 ft ÷ y
1.6643 = 400 ft ÷ y
y = 400 ÷ 1.6643
y = 240.34 ft
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