Kitkatuu
26.07.2019 •
Mathematics
Which expression is equivalent to (3x-6/7) ? a) -15x-30/7 b) -15x-6/7 c) -15x+6/7 d) -15x+30/7
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Ответ:
-5(3x-6/7)=-15x+30/7
Ответ:
C = (5/9)(F - 32)
so your temperature in °C is
C = (5/9)(20 -32)
C = -60/9 = -6 2/3 ≈ -6.7
Conversion from °C to K is achieved by adding 273.15.
K = C +273.15 = -6.67 +273.15 = 266.48
20 °F ≈ -6.7 °C ≈ 266.5 K