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alexgriva [62]
3 years ago
14

A​ sparkling-water distributor wants to make up 200 gal of sparkling water to sell for $ 5.00 per gallon. She wishes to mix thre

e grades of water selling for ​$10​.00, ​$1​.00, and​ $4.50 per​ gallon, respectively. She must use twice as much of the​ $4.50 water as the $ 1.00 comma water. How many gallons of each should she​ use?
Mathematics
2 answers:
devlian [24]3 years ago
8 0
The answer will be D
Tom [10]3 years ago
8 0

Answer:

x=50

y=50

z=100

Step-by-step explanation:

Let x = $10

y = $1

z = $4.5

2y=z

5 * 200 = 1000 Dollars wanted

1000 = 10x + y + 4.5z

variables represent number of gallons of each type

1000 = 10x + y + 4.5(2y)      sub z for y

x=50

y=50

z=100

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At the start of 2014, Mike's car is worth 12000. the car depreciates by 30 percent every year. how much is his car worth in 2017
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Answer:

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