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galina1969 [7]
3 years ago
15

Select the correct questions. Which questions are statistical questions? which subjects do the students in my class like? how ma

ny servings of fruit did I eat each day of the month? what is my height? What is the number of students in my class? what is my favorite color? What is the height of each student in my class? what is my mother's favorite fruit? How many students from each school in this city love football?
Mathematics
1 answer:
Yakvenalex [24]3 years ago
5 0

Answer:

(༎ຶ¬༎ຶ)Step-by-step explanation:

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A spherical pressure vessel is required to contain 1.5 m3 of compressed natural gas at 22 MPa . If the tank is made of A516 grad
kifflom [539]

Answer:

The required thickness of the tank wall is 87.7668 mm.

Step-by-step explanation:

Given :

Volume of vessel is V=1.5 m³.

A spherical pressure vessel is of compressed natural gas at P=22 MPa.

If the tank is made of A516 grade 60 steel with a maximum normal stress 150 MPa.

i.e. \sigma_{max}=150\ Mpa

To find : What is the required thickness of the tank wall?

Solution :

The diameter of the vessel is given by,

\frac{d}{2}=\sqrt{\frac{3V}{4\pi} }

\frac{d}{2}=\sqrt{\frac{3\times 1.5}{4\times 3.14}}

\frac{d}{2}=\sqrt{\frac{4.5}{12.56}}

\frac{d}{2}=\sqrt{0.358}

\frac{d}{2}=0.598

d=1.196\ m

Convert into mm,

d=1.196\times 1000=1196.82\ mm

The thickness of the wall tank is given by,

t=\frac{Pd}{2\sigma}

t=\frac{22\times 1196.82}{2\times 150}

t=\frac{26330.04}{300}

t=87.7668

Therefore, the required thickness of the tank wall is 87.7668 mm.

4 0
4 years ago
If f(x) = 5x(3exponent) - 2 and g(x) = 2x+1 , find (f+g) (x)
Rus_ich [418]

For this case we must find

(f + g) (x).

By definition we have to:

(f + g) (x) = f (x) + g (x)

We have the following functions:

f (x) = 5x ^ 3-2\\g (x) = 2x + 1

Now, applying the given definition, we have:

(f + g) (x) = 5x ^ 3-2 + 2x + 1\\(f + g) (x) = 5x ^ 3 + 2x-1

Answer:

(f + g) (x) = 5x ^ 3 + 2x-1

4 0
3 years ago
Give the values of a,b, and c from the standard form of the equation (2x+1)(x-2)=0
Arte-miy333 [17]

Answer:

a=2,b=-3 and c=-2

Step-by-step explanation:

(2x+1)(x-2)=0

2x²-4x+x-2=0

2x²-3x-2=0

Comparing it with the standard form of quadratic equation ax²+bx+c=0 we get

a=2,b=-3 and c=-2

5 0
3 years ago
Read 2 more answers
In a bicycle store, a $540 bicycle is marked, "Get a 35% discount." What is the sale price of the bicycle?
marissa [1.9K]

Answer:

351

Step-by-step explanation:

35% of 540 is 189

540-189=351

6 0
3 years ago
Read 2 more answers
What is the midpoint of (-2,-6) and (-5,-1)
sergiy2304 [10]

Answer:

(-7/2, -7/2)

Step-by-step explanation:

[(-2-5)/2, (-6-1)/2]

(-7/2, -7/2)

7 0
3 years ago
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