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user100 [1]
3 years ago
13

Under certain conditions the pressure of a gas varies directly with the temperature. When the pressure is 900 psi, the temperatu

re is 350. What is the pressure when the temperature is 70?
Mathematics
1 answer:
Crank3 years ago
8 0

Answer:

180psi

Step-by-step explanation:

Step one:

given data

P1= 900 psi

T1= 350°C

P2=?

T2=70°C

Required

The final pressure P2

<em>Gay-Lussac's Law: The Pressure Temperature Law. This law states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. With an increase in temperature, the pressure will go up</em>

Applying the expression

P1/T1= P2/T2

substitute:

900/350= P2/70

2.57=P2/70

cross multiply

P2= 2.57*70

P2=180psi

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Answer:

  • b = -10, c = -106

Step-by-step explanation:

<h3>Given</h3>

<u>Quadratic function </u>

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with the roots:

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<h3>To find </h3>
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And

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  • (-5)² - (9i)² = -c
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3 years ago
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Find the equation for the trend line through the points (0, 11) and (100, 33). Then use it to predict the number of baskets Romy
sleet_krkn [62]

Answer:

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Step-by-step explanation:

The equation for a linear trend line is given by:

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The equation of a line passing through two points (x_1,y_1)\ and\ (x_2,y_2) is:

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y represent the number of baskets made and x represents the time take. Given that the line passes through the points  (0, 11) and (100, 33), hence:

y-11=\frac{33-11}{100-0}(x-0)\\\\y-11=\frac{11}{50}x\\\\y=  \frac{11}{50}x+11

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