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olasank [31]
3 years ago
10

A thermal insulating sleeve is used to cover the lateral surface of a hot water heater to help improve efficiency. The hot water

tank is a cylinder with a 13 inch radius and a 75 inch height. The sleeve is 3 inches thick. The insulting material that makes up the sleeve is a fiberglass composite. How many cubic inches of fiberglass composite are needed to create each sleeve, to the nearest tenth of a cubic foot ?
Mathematics
1 answer:
Alex3 years ago
8 0

Answer:

706.85775

Step-by-step explanation:

First you find the volume of the tank

13*3.14159=40.84067

40.84067*75=3063.05025

Then find the volume of both the tank and sleeve

13+3=16

16*3.14159=50.26544

50.26544*75=3769.908

Subtract the original volume with the combined volume

3769.908-3063.05025=706.85775

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What’s two fractions that can be simplified to 1/2
kvasek [131]

Answer:

2÷4 and 4÷8

Step-by-step explanation:

Multiplying 2 by 1/2 and multiplying 4 by 1/2 can all be simplified to 1/2 when divided by its multiplier

7 0
3 years ago
Can you please help me ​
sergiy2304 [10]

Answer:

  x = 23

Step-by-step explanation:

The marked angles are "corresponding," hence congruent:

  8x -27 = 7x -4

  x = 23 . . . . . . . . . add 27-7x to both sides

5 0
3 years ago
19-(3-5b)<br>....,.......​
Serjik [45]

Answer:

Step-by-step explanation:

19(-3+5b)

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6 0
3 years ago
If sin ⁡x=725, and 0 ∠ x ∠ pi/2, what is the tan (x - pi/4)
krok68 [10]

Tan(x-\frac{\pi }{4}) = \frac{-17}{31}

<u>Step-by-step explanation:</u>

Here we have ,  sin ⁡x=7/25( given sin x = 725 which is not possible ) , 0 . Let's find tan (x - pi/4):

⇒ Tanx = \frac{sinx}{cosx}

⇒ Tanx = \frac{sinx}{\sqrt{1-(sinx)^{2}}}

⇒ Tanx = \frac{\frac{7}{25}}{\sqrt{1-(\frac{7}{25})^{2}}}

⇒ Tanx = {\frac{7}{25}}{\sqrt{(\frac{625}{625-49})^{}}}

⇒ Tanx = {\frac{7}{25}}(\frac{25}{24} )

⇒ Tanx = {\frac{7}{24}}

Now , Tan(x-\frac{\pi }{4}) = \frac{Tanx - Tan(\frac{\pi }{4} )}{1+ Tanx(Tan(\frac{\pi }{4} )}

⇒ Tan(x-\frac{\pi }{4}) = \frac{Tanx -1}{1+ Tanx(1)}

⇒ Tan(x-\frac{\pi }{4}) = \frac{\frac{7}{24}  -1}{1+\frac{7}{24} }

⇒ Tan(x-\frac{\pi }{4}) = \frac{\frac{7-24}{24} }{\frac{7+24}{24} }

⇒ Tan(x-\frac{\pi }{4}) = \frac{-17}{24} (\frac{24}{31} )

⇒ Tan(x-\frac{\pi }{4}) = \frac{-17}{31}

7 0
3 years ago
Need help ASAP<br> find the mean,median, range and IQR<br> brainliest
N76 [4]
The mean= 5.5

The median= 6

The range= 10

The IQR= 5

I really hope this helps:)
4 0
3 years ago
Read 2 more answers
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