3 years ago

[2/(n+2)] - (3/n+2) = 5 Solve by u-substitution

1 answer:

7 0

let n+2=u so, the equation became= [2/u]-[3/u]=5 => [(2+3)/u]=5 => 5/u=5 => u=5/5=1 thus, u=1 we know u=n+2 so, n+2=1 => n=1-2=-1 so, n=-1

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At the fall festival, a booth is selling $5 meals and $10 meals. They sell 1000 meals in all and collect $3500. Which system of

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The system of equation that can be used to represent the number of meals sold is

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Given:

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The equations:

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x + y = 1000

Price

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Therefore, the system of equation that can be used to represent the number of meals sold is

x + y = 1000

x + y = 10005x + 10y = 3,500

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