anonymous
  • anonymous
A pet shop had 8 identical fish tanks in the shape of rectangular prisms. The width and height of each tank was (x - 7) inches and the length was 8 inches more than its width. The expression below shows the maximum amount of water which all the tanks together can hold. 8(x + 1)(x - 7)2 What does the factor (x - 7)2 represent? The total base area of all the tanks The total surface area of each tank The area of the rectangular base of each tank The area of a square shaped side of the tank
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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MrNood
  • MrNood
the total that EIGHT identical tanks can hold is 8 times (x + 1)(x - 7)^2 To start with - can you write write the volume of ONE tank?...
anonymous
  • anonymous
(x+1)(x-7)^2
MrNood
  • MrNood
OK good now - a 'rectangular prism is just a fancy name for a cuboid the voloume of a cuboid is l times w times h but it tell you the the width and the height are both (x-7) so how could you write l times w times h using that expression (x-7)??

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MrNood
  • MrNood
|dw:1450195528419:dw|
anonymous
  • anonymous
(x-7)^2
anonymous
  • anonymous
right? @MrNood
MrNood
  • MrNood
yes - so look at the answers - which of those is represented by that expression?
anonymous
  • anonymous
so B.

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