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musickatia [10]
3 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]3 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]3 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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marysya [2.9K]

Answer:

4 miles

Step-by-step explanation

If your mom can walk 1 mile in 14 minutes then 2 miles would take her 28 minutes 3 miles would take her 42 minutes and finally if she walked 4 miles it would take her 56 minutes.

14 + 14 + 14 + 14 = 56

14 x 4 = 56

3 0
2 years ago
−−→ LO bisects ∠ NLM , LM = 18 , NO = 4 , and LN = 10 . LO → bisects ∠ NLM , LM = 18 , NO = 4 , and LN = 10 . What is the value
Sindrei [870]

Answer:

7.2

Step-by-step explanation:

Given that in triangle LMN, LO is angle bisector of angle L.

LN =10 and LM =18

By angle bisector theorem for triangles we have

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Substitute the values for known things and x for MO

We get

10/18 = 4/x

Or cross multiply to get

10x=72

x=7.2

So answer is 7.2

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3 years ago
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Well first let's find out how many books she reads in 1 month.
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Now we multiply 5.5 by the amount of months she will be reading.
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Let's see

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