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3 years ago

The square of the sum of 7 times x and 3 divided by 4 times the difference of x and 1

Mathematics

2 answers:

nikklg [1K]3 years ago

6 0

Answer: Third option is correct.

Step-by-step explanation:

Since we have given that

The square of the sum of 7 times x and 3 divided by 4 times the difference of x and 1.

The square of the sum of 7 times x and 3 would be written as

$(7x+3)^2$

and 4 times the difference of x and 1 is written as

$4(x-1)$

Mathematically, it is expressed as

$\dfrac{(7x+3)^2}{4(x-1)}$

Hence, Third option is correct.

4vir4ik [10]3 years ago

4 0

I believe the 3rd answer down if the information you provided is correct

Squaring the sum on the top, rules out 1 and 2 (not squaring the 7 only)
then 4 times the difference. so I believe 4 (x-1) on the bottom.

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Answer:

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Step-by-step explanation:

Given:

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let the width of the strip = x

The strip around the outside field = 2x

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New area of the field = 1.155 x 20000 = 23,100 ft^2

The increase in area of the field = 3,100 ft

3,100 = New area of field - old area of the field

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Factorize

(x + 155)(x-5) = 0

x = 5 ft

The strip should be 5ft wide.

The strip around the outside field = 2 x 5 ft = 10 ft

Thus, the strip around the outside field is 10ft wide.

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Step-by-step explanation:

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