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Komok [63]
4 years ago
10

3x(x+3)=5x+4 solve the equation

Mathematics
2 answers:
Dvinal [7]4 years ago
4 0
3x^2+9x=5x+4
2x^2+x^2+4x-4=0
x (2x+x)+4 (x-1)=0
x=0
2x+x=0
3x=0
x=0

x-1=0
x=1
max2010maxim [7]4 years ago
3 0
<span>3x(x+3)=5x+4
3x+9x=5x+4
12x=5x+4
12x-5x=4
7x=4
x=0.57</span>
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Part A

<h3>Answer:  h^2 + 4h</h3>

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The units for the area are in square inches.

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Part B

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Explanation:

If we add a 3 inch frame along the border, then we're adding two copies of 3 inches along the bottom side. The h+4 along the bottom updates to h+4+3+3 = h+10 along the bottom.

Similarly, along the vertical side we'd have the h go to h+3+3 = h+6

The old rectangle that was h by h+4 is now h+6 by h+10

Multiply these expressions to find the area

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Source:
http://www.1728.org/compint.htm




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