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tigry1 [53]
3 years ago
11

This table represents a proportional relationship.

Mathematics
2 answers:
Yakvenalex [24]3 years ago
6 0

Answer:

3/2

Step-by-step explanation:

IRISSAK [1]3 years ago
5 0

Answer:

3/2

Step-by-step explanation:

I took the test

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Ammonia at 70 F with a quality of 50% and a total mass of 4.5 lbm is in a rigid tank with an outlet valve at the bottom. How muc
Inessa05 [86]

Answer:

0.10865 killograms

Step-by-step explanation:

calculating the liquid mass of ammonia removed through the bottom value from a rigid tank at constant temperature.

Given:

temperature: T=70 F

quality : 50% = 0.5

initial mass: m1= 4.5 lbm

to find the removed liquid mass first we have to find total volume from which we can find remaining mass. as the tang is rigid the temperature and volume remains constant.

by taking the difference of mass we can determine the mass of liquid removed.

 we have two phases at temperature T= 70 F with specific volume for liquid  vf=0.02631 ft^3/lbm  and specific volume for vapor is  vg=2.3098 ft^3/lbm .

The Volume in the initial state is given by, (Using definition of specific volume)

                                          V= m1v1

 using v1=x(vf+vg)

                                    V= m1x(vf+vg)

substituting m1= 4.5 lbm\\ , vf= 0.02631 ft^3/lbm , vg=2.3098 ft^3/lbm

we get

        V= (4.5 lbm)(0.5)(0.02631 ft^3/lbm +2.3098 ft^3/lbm)  

finally          V=5.2625 ft^3  

we know the formula to find liquid mass is

mass =density *volume

density of ammonia is  0.73 kg/m^3

inserting the values into the formula we get the value for liquid mass removed through the valve.

m = (0.73 kg/m^3)*(5.25625 ft^3)

the final answer is

                           m= 0.10865 kg

4 0
4 years ago
The population of center city is modeled by exponential function f, where x is the number of years after the year 2015
Vladimir [108]

Find the ratio of the area to the square radius for each circle.

6 0
3 years ago
5. What Ouadrant would this ordered pairs go in? 5.3)*
liubo4ka [24]

Answer:

1st quadrant

Step-by-step explanation:

6 0
3 years ago
7. (0) + (-9) * (+8) =
ivolga24 [154]

Answer:

-72

Step-by-step explanation:

7 0
3 years ago
Scores on a national math test are Normally distributed, with a mean score of 490 and a standard deviation of 50. Which test sco
alisha [4.7K]

Answer:

532

Step-by-step explanation:

The score that represents the top 20% = A score = 80%

Z score for 80% percentile = 0.842

We solve using the z score formula

z = (x-μ)/σ, where

x is the raw score = ??

μ is the population mean = 490

and σ is the population standard deviation = 50

Hence:

0.842 = x - 490/50

Cross Multiply

0.842 × 50 = x - 490

x = 0.842 × 50 + 490

x = 42.1 + 490

x = 532.1

Approximately = 532

Therefore, the test score = 532

7 0
3 years ago
Read 2 more answers
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