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Margaret [11]
3 years ago
13

Solve 1/2x + 3 < 4x - 7

Mathematics
1 answer:
Serhud [2]3 years ago
3 0
20/7 if you download the app photo math or go to the website symbalo it really helps with order of operations
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Answer:

Number of dimes = 34

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Step-by-step explanation:

Total number of coins = 47

Coins are in the form of nickels and dimes.

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Total value of coins = $4.05 or 405 cents

To find:

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Solution:

Let number of nickels = x

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This value is given as equal as 405.

As per question statement, the equations can be written as:

5x+10y = 405 ..... (1)\\x+ y = 47 ...... (2)

Multiplying equation (2) with 5 and subtracting from equation (1):

10y - 5y = 405 - 235  \\\Rightarrow 5y = 170\\\Rightarrow y = 34

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