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svet-max [94.6K]
3 years ago
8

How many solutions are there to this system of equations?

Mathematics
1 answer:
Zinaida [17]3 years ago
5 0

Answer:

one

Step-by-step explanation:

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The length of a rectangle is three times it's width. If the width is diminished by 1 m and length is increased by 3 m, the area
Stella [2.4K]

Answer: the length is 15 m and the width is 5 m

Step-by-step explanation:

Let L represent the original length of the rectangle.

Let W represent the original width of the rectangle.

The length of a rectangle is three times it's width. This means that

L = 3W

If the width is diminished by 1 m and length is increased by 3 m, the area of the rectangle that is formed is 72 m². This means that

(L + 3)(W - 1) = 72

LW - L + 3W - 3 - 72 = 72 + 3

LW - L + 3W = 75 - - - - -- - - - - - 1

Substituting L = 3W into equation 1, it becomes

3W × W - 3W + 3W = 75

3W² = 75

W² = 75/3 = 25

W = √25 = ±5

The width cannot be negative. Therefore, the width is 5 m

L = 3W = 3 × 5 = 15 m

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3 years ago
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The Identity Property

Step-by-step explanation:

The identity property for addition tells us that zero added to any number is the number itself. Zero is called the "additive identity." The identity property for multiplication tells us that the number 1 multiplied times any number gives the number itself.

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146 Mathe Functional skills Level 1 Diagnostic
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31

Step-by-step explanation:

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(50 points) need help.
tatiyna

Answer:

I believe it is 127ft²

Step-by-step explanation:

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