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liberstina [14]
3 years ago
6

What expression is equivalent to the area of metal sheet required to make this square-shaped traffic sign?

Mathematics
2 answers:
vovangra [49]3 years ago
7 0
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

Below are the choices based on the question above:

<span>16x2 + 12x + 9

  16x2 + 24x + 9

  8x2 + 9

  8x2 + 6
</span>
The answer is the second one <span>16x^2 +24x+9</span>
AveGali [126]3 years ago
3 0

Answer: \text{Area of the square shaped traffic sign }=16x^2+9+24x

Step-by-step explanation:

Given: The side of the square shaped traffic sign = 4x+3

We know that the area of square is given by:-

Area= side^2

Therefore, the area of the side of the square shaped field is given by:-

Area=(4x+3)^2

We know that , (a+b)^2=a^2+b^2+2ab

Therefore,

(4x+3)^2=(4x)^2+(3)^2+2(4x)(3)\\=16x^2+9+24x

Hence, \text{Area of the square shaped traffic sign }=16x^2+9+24x

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3 years ago
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ale4655 [162]
The correct answer is d.

We have the following system of linear equations:

(I) 4x+7y=-14
(II) 8x+5y=8

Let's use the elimination method, then let's multiply the equation (1) \times(-2) and subtracting (I) and (II):

(I) -2(4x+7y)=-2(-14)
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(I) -8x-14y=28
(II) 8x+5y=8
____________________
(III)  -9y=36

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We can find the value of x by substituting y either in (I) or (II). Thus, from (I):

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