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vlabodo [156]
2 years ago
9

The perimeter of a rectangular pool is more than 62 meters, and the width is at least 10 meters less than the length. Which syst

em of inequalities represents the possible length in meters, l, and the possible width in meters, w, of the pool? w ≤ 10 â€" l 2l 2w ≥ 62 w ≤ 10 â€" l 2l 2w > 62 w ≤ l â€" 10 2l 2w ≥ 62 w ≤ l â€" 10 2l 2w > 62.
Mathematics
1 answer:
LenKa [72]2 years ago
6 0

The inequalities is given by l - w > 10  and l + w > 62

Let the possible length in meters, l, and the possible width in meters, w, of the pool.

Since the perimeter of a rectangular pool is more than 62 meters:

2(l + w) > 62

l + w > 62     (1)

Also,  the width is at least 10 meters less than the length. hence:

l - w > 10    (2)

The inequalities is given by l - w > 10  and l + w > 62

Find out more on inequalities at: brainly.com/question/11613554

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Answer:

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Step-by-step explanation:

(a)

Since points L and M have same x coordinates, it means they are in the same plane. Also, since the Y coordinates of L and N are same, they also lie in the same plane

Length LM=\sqrt {(7-7)^{2}+(16-4)^{2}}=12 units

Length LN=\sqrt {(42-7)^{2}+(4-4)^{2}}=35 units

LengthMN=\sqrt {(42-7)^{2}+(4-16)^{2}}=37 units

Alternatively, since this is a right angle triangle, length MN is found using Pythagoras theorem where

MN=\sqrt {(LN)^{2}+(LM)^{2}}=\sqrt {(12)^{2}+(35)^{2}}=37 units

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(b)

Perimeter is the distance all round the figure

P=LM+LN+MN=12 units+35 units+37 units=84 units

(c)

Area of a triangle is given by 0.5bh where b is base and h is height, in this case, b is LN=35 units and h=LM which is 12 units

Therefore, A=0.5*12*35= 210 square units

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