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musickatia [10]
2 years ago
13

Which expression is equivalent to the area of metal sheet required to make this square-shaped traffic sign? (5 points) A square

shaped traffic sign is shown with length of one side labeled as 2x minus 1.
Select one: a. 4x2 − 1 b. 4x2 + 1 c. 4x2 + 4x − 1 d. 4x2 − 4x + 1
Mathematics
2 answers:
andrezito [222]2 years ago
3 0
The correct answer is d) 4x² - 4x + 1.

The area of a square is found by squaring the side length:

(2x-1)² = (2x-1)(2x-1) = 2x*2x - 2x*1 - 2x*1 - 1(-1) = 4x² - 2x - 2x + 1 = 4x²-4x+1
Strike441 [17]2 years ago
3 0

Answer: d. \ 4x^2-4x + 1


Step-by-step explanation:

Given the length of one side of the square shaped traffic sign = (2x-1)

We need to find the expression for the area of the square shaped traffic sign.

Area of the square of given by formula

A= Side × Side

Plugging value of expression length of side of the square in above formula, we get

A= (2x-1) (2x-1)

Let us foil it now.

A = (2x)(2x) +(2x)(-1) + (-1) (2x) +(-1)(-1)

= 4x^2-2x-2x+1

A=4x^2-4x+1

Therefore, correct option is d. \ 4x^2-4x + 1

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disa [49]
The quick way to dispute something like this is to simply do the calculation and then create a ratio. 

Cube One (Large Cube)
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Cube 2 (Small Cube)
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Ratio
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The difference in size is 8 to 1 not 2 to 1.

Explanation
He's right if he sticks to one side. The ratio of one side of the large cube to the small one is 2 to 1. But once you put that into the formula for volume, three sides are multiplied together and that 2 shows up everytime you multiply the sides together. 

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Answer:

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Read 2 more answers
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