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artcher [175]
3 years ago
13

Given 4x+5y=2b and x+3y=b what is the value of 17y

Mathematics
1 answer:
Alex777 [14]3 years ago
4 0

4x + 5y = 2(x + 3y)

4x + 5y = 2x + 6y   <em>distributed 2 on the right side</em>

2x + 5y = 6y           <em>subtracted 2x from both sides</em>

2x = y                      <em>subtracted 5y from both sides</em>

         if y = 2x

then 17(y) = 17(2x)

          17y = 34x

Answer: 34x

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Deva bought 9 1/2 m of cloth for rupees 28 1/2.Samruth buys 26 1/3 m of same cloth. how much should samruth pay the shopkeeper?
likoan [24]

For this case we can make the following rule of three:

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x = (\frac{26+\frac{1}{3}}{9+\frac{1}{2}}) (28+\frac{1}{2})

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x = (\frac{\frac{79}{3}}{\frac{19}{2}}) (\frac{57}{2})

x = (\frac{158}{57}) (\frac{57}{2})

x = \frac{158}{2}

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5 0
3 years ago
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One serving of a certain brand of microwave popcorn provides 150 calories, 90 of which are from fat. One serving of a certain br
alexandr1967 [171]

Answer: 50 calories

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One serving of a certain brand of microwave popcorn provides 150 calories, 90 of which are from fat. The fraction that comes from fat:

= 90/150 = 3/5

One serving of a certain brand of low-sodium pretzels provides 120 calories, 12 of which are from fat. The fraction that comes from fat here:

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The difference from fat that are provided by a 100 calorie serving of the microwave popcorn than are provided by a 100-calorie serving of the pretzels would be:

= 60 - 10

= 50 calories

6 0
3 years ago
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