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ddd [48]
3 years ago
8

the angles of a quadrilateral measure 80°,100°,100°,and 80° in this order.what kind of quadrilateral has this shape? how do you

know ?
Mathematics
1 answer:
nlexa [21]3 years ago
5 0
It has two pairs of same angles: that means that the opposite sides are parallel: this makes it a parallelogram.
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£440 is divided between David, Mark &amp; Henry so that David gets twice as much as Mark, and Mark gets three times as much as H
Lesechka [4]

Mark received £ 132

<em><u>Solution:</u></em>

Given that £440 is divided between David, Mark & Henry

Let "d" be the share of david

Let "m" be the share of mark

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Therefore,

share of david + share of mark + share of henry = 440

d + m + h = 440 ------- eqn 1

<em><u>David gets twice as much as Mark</u></em>

d = 2m ----- eqn 2

<em><u>Mark gets three times as much as Henry</u></em>

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<em><u>Substitute eqn 2 and eqn 3 in eqn 1</u></em>

2m + m + \frac{m}{3} = 440\\\\\frac{6m + 3m + m}{3} = 440\\\\10m = 1320\\\\m = 132

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