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Kay [80]
3 years ago
5

The length of a rectangle is 3 less than twice the width. The perimeter is 30 cm. Find the length and width.

Mathematics
2 answers:
VikaD [51]3 years ago
4 0

Answer: the width is 6 and the length is 9

Step-by-step explanation:

6*2 is 12 - 3 = 9

6+6+9+9=30

mars1129 [50]3 years ago
4 0

Answer:

Length = 9

Width = 6

Step-by-step explanation:

2L + 2W = 30

L + 3 = 2W

2L +L + 3 = 30

3L = 27

L = 9

9 + 3 = 2W

2W = 12

W = 6

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Answer:

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Therefore the co-ordinate of the point on the line segment from (-9,-1) to(-9,-10) into a ratio internally is (-9,-19).

Step-by-step explanation:

Given points are (-9,-1) and (-9,-10)

If a point divides the line segment by joining two points (x₁,y₁) and (x₂,y₂)  into a ratio m:n internally.

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If a line segment is externally divided into a point by joining two points (x₁,y₁) and (x₂,y₂) with m: n ratio.

Then the point of the coordinate is (\frac{m.x_2-nx_1}{m-n},\frac{my_2-ny_1}{m-n}).

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The co-ordinate of the point is (\frac{(-9)\times2+(-9)\times 1}{2+1},\frac{(-10)\times 2+(-1)\times 1}{2+1})

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Externally

The co-ordinate of the point is (\frac{(-9)\times2-(-9)\times 1}{2-1},\frac{(-10)\times 2-(-1)\times 1}{2-1})

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