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2 years ago

Please help quick first correct answer will get brainliest if I can give it

Advanced Placement (AP)

2 answers:

Artyom0805 [142]2 years ago

7 0

Answer:

dddddddd

Explanation:

I got it correct on the quiz

jarptica [38.1K]2 years ago

4 0

Answer:

D- all of these

Explanation:

Edg. 2021

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Surface Area of a can is 517.8 cm^2. Maximize the volume of this can using the measured surface area.

mafiozo [28]

Answer:

$r = 5.24$ --- Radius

$h = 10.48$ --- Height

Explanation:

Given

Object: Can (Cylinder)

$Surface\ Area = 517.8cm^2$

Required

Maximize the volume

The surface area is:

$S.A = 2\pi r^2 + 2\pi rh$

Substitute 517.8 for S.A

$517.8 = 2\pi r^2 + 2\pi rh$

Divide through by 2

$258.9 = \pi r^2 + \pi rh$

Factorize:

$258.9 = \pi r(r + h)$

Divide through by $\pi r$

$\frac{258.9}{\pi r} = r + h$

Make h the subject

$h = \frac{258.9}{\pi r} - r$ --- (1)

Volume (V) is calculated as:

$V = \pi r^2h$

Substitute (1) for h

$V = \pi r^2(\frac{258.9}{\pi r} - r)$

Open Bracket

$V = 258.9r - \pi r^3$

Differentiate V

$V' = 258.9 - 3\pi r^2$

Set V' to 0

$0 = 258.9 - 3\pi r^2$

Collect Like Terms

$3\pi r^2 = 258.9$

Divide through by 3

$\pi r^2 = 86.3$

Divide through by $\pi$

$r^2 = \frac{86.3}{\pi}$

$r^2 = \frac{86.3*7}{22}$

$r^2 = \frac{604.1}{22}$

Take square root of both sides

$r = \sqrt{\frac{604.1}{22}$

$r = 5.24$

Recall that:

$h = \frac{258.9}{\pi r} - r$

Substitute 5.24 for r

$h = \frac{258.9}{\pi * 5.24} - 5.24$

$h = \frac{258.9*7}{22 * 5.24} - 5.24$

$h = \frac{1812.3}{115.28} - 5.24$

$h = 15.72 - 5.24$

$h = 10.48$

Hence, the dimension that maximize the volume is:

$r = 5.24$ --- Radius

$h = 10.48$ --- Height

7 0

2 years ago

Which word, if it occurred in a true/false question, would give you a hint at the correct answer?

Anton [14]

Hey there

<span>The first step is to carefully read every single word of the question and answers,keeping in mind that the some small detail can affect the answer.

You should also pay great attention to negative words and prefixes. Words such as "un" can make your answer wrong if unread properly. If an event is "unlikely to happen," that means it is most likely an occurrence.</span>

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2 years ago

Technician A says most shops use a spray wash cabinet to degrease their engine blocks. Technician B says some shops dip their ma

Alecsey [184]

Answer:

Technician A

Explanation:

While technician B is only partially correct, the statement of the technician A is completely true. Most shops use a spray wash cabinet, which is similar to a dishwasher that contains a strong soap and hot water solution. The solution is sprayed at parts, that are placed on a turntable, under high pressure, successfully removing oil, grease, and dirt.

As the technician B stated, some shops dip major engine parts in a hot caustic solution (but not a cold one). This method is called hot tanking, and although it cleans the engine parts well, it rarely removes all of the rust and oil paint. Due to environmental issues, this method is being used less and less.

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2 years ago

What is the curving of the path of oceans and winds due to esrths rotation is the

nadezda [96]

Coriolis Effect
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2 years ago

compare two ways in which destructive relationship influence your well-being as opposed to a destructive relationships

baherus [9]

Wait what you said destructive relationship twice I don’t understand ???

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2 years ago