Which expression is equivalent to the following expression 3+13+3+13+3+13 : a) 3(13) b) 3(3+13) c)3×13 d) 3(3×13)
1 answer:
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Answer:
The value of pressure at an altitude of 10000 ft = 10
Step-by-step explanation:
Given data
Atmospheric pressure = 14.7
Pressure at 4000 ft = 12.6
If temperature is constant then the atmospheric pressure is varies with the altitude according to law
P (h) =
------ (1)
where k= constant & h = height
12.6 = 14.7
0.857 =
㏑ 0.857 = - 4000 k
-0.154 = - 4000 k
k = 3.85 ×
Thus the atmospheric pressure at an altitude of 10,000 ft is
14.7 ×
----- (2)
Product of k & h is
k h = 3.85 × × 10000
k h = 0.385
Put his value of k h = 0.385 in equation (2) we get
14.7 ×
10
This is the value of pressure at an altitude of 10000 ft.