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Genrish500 [490]
3 years ago
9

Solve the system of equations. -5x+2y=9. y=7x

Mathematics
1 answer:
il63 [147K]3 years ago
7 0

- 5x + 2y = 9 \\ y = 7x \\  \\  - 5x + 2 \times 7x = 9 \\  - 5x + 14x = 9 \\ 9x = 9 \\ x = 1 \\  \\ y = 7 \times 1 = 7 \\

Answer: (1; 7)

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31 raffle tickets

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A sum of money is divided in the ratio 2 : 3 : 7 .Given the largest share is $112,calculate the smallest share.
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Step-by-step explanation:

A sum of money is divided in the ratio 2:3:7.

Let the share of each individual be represented by 2x,3x,7x respectively.

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Mrs.Willy bought 3 1/2 pounds of ground turkey and 2 1/2 pounds of white fish the white fish is $4.60 per pound cheaper than the
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Answer:

the price per pound she paid for the ground turkey = $10.515

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= $5.915

Step-by-step explanation:

Let x = cost of one pound of ground turkey.

Let y = cost of one pound of white

fish

Mrs.Willy bought 3 1/2 (7/2) pounds of ground turkey and 2 1/2(5/2) pounds of white fish and she paid a total of $51.59. This means

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= $5.915

8 0
3 years ago
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