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2 years ago

WILL GIVE BRAINLIEST

Mathematics

1 answer:

serg [7]2 years ago

6 0

Answer:

It is the second graph, the one with two filled in dots, but no line.

Step-by-step explanation:

The reason it is not the first one is because it has not filled in dots, AND no line, so it's basically saying there is no answer, which is not true.

The reason the third one (the one with a line) is wrong is because, for example, x cannot be 1, because 1 ≠ 2, and if there is a line, it should be true.

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3 years ago

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vesna_86 [32]

Answer:

x=3 meters

Step-by-step explanation:

step 1

Find the area of the rectangular pool

$A=LW$

we have

$L=18\ m\\W=12\ m$

substitute

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step 2

Find the area of rectangular pool including the area of the walkway

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$L=(18+2x)\ m\\W=(12+2x)\ m$

substitute

$A=(18+2x)(12+2x)$

step 3

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step 4

Find the value of x if the area of the walkway equal the area of the pool

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Solve the quadratic equation by graphing

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see the attached figure

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