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mafiozo [28]
3 years ago
13

a dress pattern reqiures 3/18 yards of fabric. jody wants to make matting dresses for the girls in her sewing club so she purcha

sed 343/8 yards of fabric how many dresses can jody make
Mathematics
2 answers:
Jlenok [28]3 years ago
8 0
<span>343/8 / 3/18 = 1029/4 
She can make 1029 dresses</span>
irina1246 [14]3 years ago
3 0
1029 or 1029/4 because you divide both fractions.
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Answer:

9/80

Step-by-step explanation:

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2 years ago
The length of a rectangle is 4 meters less than twice its width. The are of a rectangle is 70m^2. Find the dimensions of the rec
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Answer:

The length is 7 m

The width is 10 m

Step-by-step explanation:

length = x

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length * width = area

It is given that the area is 70 m^{2}

From there

x * (2x - 4) = 70

2x^{2} - 4x = 70

2x^{2} - 4x - 70 = 0

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In this equation a = 1, b = -2 and c = -35

Discriminant (D) formula is b² - 4ac

D = -2^{2}  - 4 * 1 * (-35) = 144 > 0

This discriminant is more than 0, so there are two possible x

Their formulas are  \frac{- b - \sqrt{D}  }{2a} and \frac{- b + \sqrt{D}  }{2a}

x_{1} =  \frac{- (-2) - \sqrt{144} }{2} = -5 < 0 (the length of the rectangle has to be more than 0, so we don't use this x)

x_{2} = \frac{- (-2) + \sqrt{144} }{2} = 7 > 0 (this one is right)

Calculating the dimensions

length = x = 7 (m)

width = 2x - 4 = 2 * 7 - 4 = 10 (m)

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3 years ago
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3   2     13
4   0     12
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