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a_sh-v [17]
2 years ago
13

Find the product and simplify your answer -4a^4(9a^2-8)

Mathematics
1 answer:
Hunter-Best [27]2 years ago
4 0

Answer: -36a^6+32a^4

Step-by-step explanation:

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PLEASE HELP ME!!!!!!!!!!!!!!!
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Answer:

15 degrees

Step-by-step explanation:

angle a= (180-90)/2=90/2=45 degrees

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3 years ago
Find A when =$275 , R=0,09 and T=4 in the formula A=prt
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Just multiply them.
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2 years ago
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The length of a rectangle is nine inches more than its width. Its area is 486 square inches. Find the width and length of the re
Elan Coil [88]

Answer:

  • width: 18 in
  • length: 27 in

Step-by-step explanation:

The relations between length (L) and width (W) are ...

  W +9 = L

  LW = 486

Substituting gives ...

  (W+9)W = 486

  W^2 +9W -486 = 0 . . . put in standard form

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The width of the rectangle is 18 inches; the length is 27 inches.

_____

<em>Comment on factoring</em>

There are a number of ways to solve quadratics. Apart from using a graphing calculator, one of the easiest is factoring. Here, we're looking for factors of -486 that have a sum of 9.

486 = 2 × 3^5, so we might guess that the factors of interest are -2·3² = -18 and 3·3² = 27. These turn out to be correct: -18 +27 = 9; (-18)(27) = -486.

3 0
3 years ago
Add. Enter a number only as your answer in the space provided<br><br><br> Please I really need help
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Answer:0

Step-by-step explanation:

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