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Evgen [1.6K]
3 years ago
13

Miss Sandy is fencing in her rectangular backyard which is 3x^2 feet wide and 4xy + 5x^3 y^2 feet long. Find perimeter of yard H

ow much fencing does she need. Use mathematics to justify your answer
Mathematics
1 answer:
hjlf3 years ago
4 0

Given:

Width of rectangular backyard = 3x^2 feet

Length of rectangular backyard = 4xy+5x^3y^2 feet

To find:

The perimeter of yard.

Solution:

Formula or perimeter of a rectangle is

Perimeter=2(length +width)

Using this formula, the perimeter of the rectangular backyard is

Perimeter=2(4xy+5x^3y^2+3x^2)

Perimeter=8xy+10x^3y^2+6x^2

Therefore, the perimeter of the rectangular backyard is 8xy+10x^3y^2+6x^2 feet. So, 8xy+10x^3y^2+6x^2 feet fencing is needed.

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The statements that are true about the intervals of the continuous function are Options 2, 4  and 5

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When you look over the interval (-1,1), the f(x) values are said to be both positive and negative and as such, f(x)<0 is false over the interval (-1,1)

When you look at the interval (-2,0) , the f(x)  is positive and as such, f(x)>0 over the interval (-2,0)

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Learn more about interval from

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