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steposvetlana [31]
3 years ago
8

Find each sum.

Mathematics
2 answers:
Ilya [14]3 years ago
6 0
(3n2-5n+6)+(-8n2-3n-2)
3n2-5n+6-8n2-3n-2
Collect like terms
3n2-8n2-5n-3n+6-2
-5n2-8n+4
yuradex [85]3 years ago
3 0

Answer:

1) C    2) 4, 11, 5

Step-by-step explanation:

Edgenuity, Just got it right

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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
At Trendy Tailor Boutique's annual end-of-season sale, every necktie in the
astra-53 [7]

By direct calculation, we will see that the full price of each necktie is $29.

<h3>How to find the complete price of each necktie?</h3>

Let's say that the full price of each necktie is f.

We know that Will each necktie costed $8 less than the full price, so he paid:

(f - $8) for each one.

Knowing that he bought 7 and paid a total of $147, we know that he paid:

$147/7 = $21

Then we need to solve:

(f - $8) = $21

Solving for f, we have:

f = $21 + $8 = $29.

So the full price of each necktie is $29.

If you want to learn more about algebra, you can read:

brainly.com/question/4344214

5 0
2 years ago
4 Choose the correct answer for the expression: 5 x 5 x 5 x 5 A 54 B. 53 C 52 D) 55​
Alchen [17]

Answer:

um I dont think any of those are right it should be 625

Step-by-step explanation:

sorry if those are the only answer choices then I do not know how to help

5 0
3 years ago
I need help please
wel

Answer:

c

Step-by-step explanation:

5 0
3 years ago
What is the value of $12000 of principal earning 4.8% compounded annually for seven years?
ivanzaharov [21]
Okay. The formula for compound interest is P(1 + r)^t, with P = principal, r = percentage rate, and t = time in years. 4.8% is 0.048 in decimal form. We add 1 to that number to get 1.048. Because the amount of time compounded is 7 years, we raise 1.048 to the 7th power. 1.048^7 is 1.388445952. Do not delete this number from your calculator. Now, multiply that number by 12,000 to get 16,661.35142 or 16,661.35 when rounded to the nearest hundredth. There. The value after seven years is $16,661.35.
4 0
4 years ago
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