kornut5536
12.05.2021 •
Mathematics
A telephone pole is tied to a stake with a cable that is exactly 10 feet away from the base of the pole. The cable creates an angle of elevation of 68 degrees. If the cable reaches the very top of the pole then approximately how tall is the telephone pole?
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Ответ:
x = 12
Step-by-step explanation:
34(16x + 16) = 37((438)(x) − 21)
18x + 12 = 158x − 9
18x + 12 − 158x = 158x − 9 − 158x
−74x + 12 = −9
−74x + 12 −12 = −9 −12
−74x = −21
(4−7) × (−74x) = (4−7) × (−21)
x = 12