anonymous
  • anonymous
help plz
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
The coordinates A(0, 0), B(0, 5) and C(3, 0) are graphed and connected together. What 3-dimensional shape will be created when this shape is rotated about the y-axis? Provide an explanation and proof for your answer to receive full credit.
anonymous
  • anonymous
@yoongi
anonymous
  • anonymous
help plz

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

nerdyotter
  • nerdyotter
A great tool for graphing this would be Desmos, if you haven't already used it. It should be able to help you visualize what the pre-image of the shape (before rotation) will look like. https://www.desmos.com/calculator
anonymous
  • anonymous
can u still help me
nerdyotter
  • nerdyotter
It looks like the shape's pre-image will be a triangle with the right angle at the origin. What would happen if you rotated this shape 360 degrees?
nerdyotter
  • nerdyotter
1 Attachment
anonymous
  • anonymous
i will be a cone
anonymous
  • anonymous
it
nerdyotter
  • nerdyotter
Correct!
anonymous
  • anonymous
thanks
nerdyotter
  • nerdyotter
No problem!
anonymous
  • anonymous
i have 2 more question if you dont mind
nerdyotter
  • nerdyotter
I'll answer them the best I can.
anonymous
  • anonymous
Which of these countries has the greatest population density? Which has the least? Provide an explanation and proof for your answer to receive full credit.
anonymous
  • anonymous
Country Population (1997 estimate) Area (square km) U.S. 272,648,000 9,364,520 Romania 22,609,000 237,391 Ghana 18,339,000 237,533
nerdyotter
  • nerdyotter
I guess I'm just not really sure what that question is trying to ask.
anonymous
  • anonymous
Country Population Area square km) U.S. 272,648,000 9,364,520 Romania 22,609,000 237,391 Ghana 18,339,000 237,533
anonymous
  • anonymous
is that a better chart
anonymous
  • anonymous
Which of these countries has the greatest population density? Which has the least? Provide an explanation and proof for your answer to receive full credit
nerdyotter
  • nerdyotter
I'm assuming it's asking you to find the number of people per square kilometer. I'm not ENTIRELY sure what to do here, but I'm assuming you could simply divide the population by the number of square kilometers (the area) to get that information.
anonymous
  • anonymous
okk
nerdyotter
  • nerdyotter
For example, the US would be 272,648,000 / 9,364,520 = 29.115.
anonymous
  • anonymous
ok
anonymous
  • anonymous
the last question
anonymous
  • anonymous
Pyramid A is a square pyramid with a base side length of 14 inches and a height of 6 inches. Pyramid B has a volume of 3,136 cubic inches. How many times bigger is the volume of pyramid B than pyramid A? Give your answer as a percent. Provide an explanation and proof for your answer to receive full credit.
nerdyotter
  • nerdyotter
Do you know how to calculate the volume of a square pyramid?
anonymous
  • anonymous
V=bh1/3 i believe
nerdyotter
  • nerdyotter
The formula is \[\frac{ 1 }{ 3 } b ^{2} h\] or \[b ^{2} \frac{ h }{ 3 }\] Knowing this, what would you get for the volume of the first square pyramid?
anonymous
  • anonymous
14^3 6/3
anonymous
  • anonymous
v=1372
nerdyotter
  • nerdyotter
That's b squared, not b cubed.
anonymous
  • anonymous
ok hold up let me add it again
anonymous
  • anonymous
v=98
nerdyotter
  • nerdyotter
I think you're getting caught up somewhere in the calculation. Let's take this step by step.
anonymous
  • anonymous
14*14=196 6/3=2 196/2=98
nerdyotter
  • nerdyotter
\[b ^{2} \frac{ h }{ 3 }\] \[14^{2} \frac{ 6 }{ 3 }\] \[196(\frac{ 6 }{ 3 }) = ? ^{3}\]
nerdyotter
  • nerdyotter
Ah, you're making the mistake of dividing 14 squared by six thirds instead of multiplying them.
anonymous
  • anonymous
ook
anonymous
  • anonymous
v=392
nerdyotter
  • nerdyotter
Good! :) Now, to calculate percent change, you would start by finding the difference between the two volumes (or the increase). The formula to find the increase is... \[Increase = New - Old\]
nerdyotter
  • nerdyotter
In this case, it would be Pyramid B - Pyramid A.
nerdyotter
  • nerdyotter
Er, I apologize. The other way around, I believe.
anonymous
  • anonymous
3,136-392= 2744
anonymous
  • anonymous
^^
nerdyotter
  • nerdyotter
Then, the formula to find percent change is \[change = (\frac{ increase }{ original })(100)\]
anonymous
  • anonymous
2744 2744/3136 (100)
anonymous
  • anonymous
87.5% is that correct
anonymous
  • anonymous
@nerdyotter is this correct
anonymous
  • anonymous
before u leave

Looking for something else?

Not the answer you are looking for? Search for more explanations.