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densk [106]
3 years ago
10

2x-y=3 ; 5x+2y=30 solve using elimination

Mathematics
1 answer:
Zigmanuir [339]3 years ago
4 0

Answer:

x = 4, y = 5

Step-by-step explanation:

2x-y=3\\4x-2y=6

so:

4x - 2y = 6\\+ 5x + 2y = 30\\9x= 36\\x=4

Substitute this into 2x - y = 3:

8-y=3\\y = 5

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The perimeter of an ICU ward, that is rectangular in shape, is 258 feet. The width is 37 feet less than the length. Find the dim
zubka84 [21]

The dimensions of the rectangle is 83 feet x 46 feet

What is the Perimeter of a Rectangle?

The perimeter P of a rectangle is given by the formula, P = 2 ( L + W) , where L is the length and W is the width of the rectangle.

Perimeter P = 2 ( Length + Width )

Given data ,

The perimeter P of the rectangle = 258 feet

Let the length of the rectangle be = L

Let the width of the rectangle be = W

And , The width is 37 feet less than the length. ,

So , W = L - 37

Perimeter P = 2 ( Length + Width )

Substituting the values of L and W in the equation , we get

Perimeter P = 2 ( L + L - 37 )

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Adding 37 on both sides , we get

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Substituting the value of L in equation ,we get

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Therefore , Length = 83 feet and Width = 46 feet

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