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tigry1 [53]
4 years ago
11

Hello :D so I just wanted to make sure that I was correct :D

Mathematics
1 answer:
never [62]4 years ago
6 0
The top is 13 so bottom has to be 13 also
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A radar unit is used to measure speeds of cars on a motorway. the speeds are normally distributed with a mean of 90 km/hr. and a
Alex787 [66]
The probability is 0.1587.

The z-score associated with this is found using the formula

z = (X-μ)/σ = (100-90)/10 = 10/10 = 1.0

Using a z-table (http://www.z-table.com) we see that the area to the left of, less than, this is 0.8413.  We want the area greater than, so we subtract from 1:
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3 years ago
Compare −114 and −1 greater than or less than
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After heating a fixed volume of gas at 50 psia from 300° R to 600°R, its pressure will be:
Vadim26 [7]

Answer:

100 psia

Step-by-step explanation:

Applying,

Pressure law,

P/T = P'/T'................. Equation 1

Where P = initial pressure, P' = Final pressure, T = initial temperature, P' = Final temperature.

make P' the subject of the equation

P' = PT'/T............ Equation 2

From the question,

Given: P = 50 psia, T = 300°R = (300×5/9)K = 166.66 K, T' = 600°R = (600×5/9)K = 333.33 K

Substitute these values into equation 2

P' = (50×333.33)/166.66

P' ≈ 100 psia

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4 0
3 years ago
Which expressions are equivalent to this expression?
Alja [10]
The answer is C. 3(y + z)

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3y + 3z
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3(y + z)
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