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07-05-2019
Mathematics

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Which algebraic expression will solve for the blue area of this square figure?

A. -12x
B. -2x+30
C. 10x+18
D. 20x

Which algebraic expression will solve for the blue area of this square figure A 12x B 2x30 C 10x18 D 20x class=

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calculista calculista

16-05-2019

Answer:

Option B. [tex]-2x+30[/tex]

Step-by-step explanation:

we know that

The blue area is equal to the area of complete rectangle minus the area of the white rectangle

so

[tex]A=(5+3x)(6)-(5)(4x)\\\\ A=(30+18x)-(20x)\\ \\A=-2x+30[/tex]

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