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4 years ago

What are your academic resolutions for 2019? What plans do you have to help yourself accomplish those goals?

1 answer:

5 0

To complete all of my classes this year and graduate. I plan to work hard in school as well as doing extra credit assignments

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What are many complex questions related to public policy, law, ethics and societal impact?

Vlad [161]

How does all those impact today the environmental

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4 years ago

What feature do plants have that provide structure and form?

Leno4ka [110]

Answer:

Plants have rigid tubes made of cellulose.

Explanation:

Plants have rigid tubes made of cellulose that provides structure and form.

Hope this helps! Please mark brainliest!

5 0

3 years ago

Identify ONE architectural or technological feature of the rural landscape shown in the photograph.

grandymaker [24]

This question is not complete because it lacks the photograph showing the architectural or technological feature of the rural landscape

Find attached to this answer the photograph showing the architectural or technological feature of the rural landscape

Answer:

Windmill

Explanation:

The Windmill is a technological structure that was created to function using the power or speed of the wind.

The speed generated by the wind was used by the windmill for various purposes.

Those purposes includes:

a. Generation of electric power also known as electricity.

b. Pumping of water.

c. Milling of grains.

d. Generation of other sources of energy

A wind mill is made of fan or blade like structures that are called VANES. This vanes utilises the speed of the wind which cause them to rotate continuously at a very high speed and allows them to generate the energy required to mill grains, pump water or generate electricity.

7 0

3 years ago

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

3 years ago

Alika [10]

Somewhat fair. Not really from the different POV from now and then. But from the people of pasts understanding they may have thought what we do now was wrong. But I think some things we have done in the past has made America what it is today. There is not much judgement from it because there’s not much we can do to change the pay

5 0

2 years ago