anonymous
  • anonymous
Find a polynomial for the perimeter and for the area. There is a box with d+2 on top and on the right side there is a d. Need the perimeter, and the area.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
so lets say a,b,c are the sides than a=b=d+2 and c=d+2?
anonymous
  • anonymous
i wrote d+2 twice :)
anonymous
  • anonymous
the box has area a*b*c

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anonymous
  • anonymous
and perimeter: 2ab+2ac+2bc
anonymous
  • anonymous
I honestly don't know how to do it this is what the question was.
anonymous
  • anonymous
thank you
anonymous
  • anonymous
hey can I ask you something?
anonymous
  • anonymous
you have to put d+2 instead of a,b and d instead of c
anonymous
  • anonymous
so area will be (d+2)^2*d=d^3+4d^2+4d
anonymous
  • anonymous
perimeter is 2(d+2)(d+2) +4d(d+2)
anonymous
  • anonymous
if I understood the question correctly, the phrasing is pretty bad
anonymous
  • anonymous
Is that after simplifing the answer?
anonymous
  • anonymous
which one?
anonymous
  • anonymous
both the perimeter and the area have to be simpfly not factor.
anonymous
  • anonymous
2(d+2)(d+2) +4d(d+2)=2d^2+8d+8+4d^2+8d=6d^2+16d+8
anonymous
  • anonymous
thank you can you do my other sample i have too?
anonymous
  • anonymous
can you do it? I guess this is some kind of homework :-) I can help but I wont solve it for you.
anonymous
  • anonymous
\[\sqrt[20]{(-9)^{20}}\]
anonymous
  • anonymous
ok. sounds good to me.
anonymous
  • anonymous
is that 30sqrt(-9)^20 ? not really visible
anonymous
  • anonymous
20sqrt(-9)^20
anonymous
  • anonymous
oh ok!
anonymous
  • anonymous
what is ur guess?
anonymous
  • anonymous
6.088
anonymous
  • anonymous
how did you get that? :)
anonymous
  • anonymous
i times -9 20 times and then i divied it by 20
anonymous
  • anonymous
oh I see, but here this is not multiplication or division
anonymous
  • anonymous
what does 2^4 mean?
anonymous
  • anonymous
the 4 is the root of 2?
anonymous
  • anonymous
would be 8
anonymous
  • anonymous
nope, 2 to the power of 4 means that you take 2*2*2*2 (4times)=16
anonymous
  • anonymous
so (-9)^20=-9*-9*-9..... (20 times)
anonymous
  • anonymous
now what does \[\sqrt{?}\] mean?
anonymous
  • anonymous
it is the inverse operation so lets say \[\sqrt[3]{8}\]
anonymous
  • anonymous
that means the number that you multiply by itself 3 times and you will get 8
anonymous
  • anonymous
when you multiply -9 20 times you don't get a good answer
anonymous
  • anonymous
you get a horrid number, really big one
anonymous
  • anonymous
but now we have 20sqrt(-9)^20
anonymous
  • anonymous
what is the number that you multiply by itself 20 times to get (-9)^20?
anonymous
  • anonymous
(-9)^20 means -9 multiplied by itself 20 times
anonymous
  • anonymous
i know what i get when u multiply -9. 20 times. u get 282042115992
anonymous
  • anonymous
I guess you counted that in your head :-)
anonymous
  • anonymous
no used my phone.
anonymous
  • anonymous
you do not need the exact value to solve the problem
anonymous
  • anonymous
the answer is: what is the number that you multiply by itself 20 times to get (-9)^20? (-9)^20 means -9 multiplied by itself 20 times it is -9
anonymous
  • anonymous
but that is not the good answer as the correct one is 9 can you see why?
anonymous
  • anonymous
by the way, I suggest not using calculator for studying maths, unless there is some horrid calculation.

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