kat1297
12.10.2019 •
Mathematics
When the temperature is 68°f, the speed of sound in air is approximately 343 meters per second. approximately how many kilometers does sound travel in one second?
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Ответ:
343 x .001 = .343 kilometers per second.
Ответ:
∠10 + 12(3) = 46°
∠15(3) + 1 = 46°
Step-by-step explanation:
the angles are equal because they are corresponding angles
(10+12x) = (15x+1)
reduce:
3x = 9
x = 3
10 + 12(3) = 46°
15(3) + 1 = 46°