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2 years ago

Solve the system. x+3y=7 2x-4y=24

Mathematics

1 answer:

Alina [70]2 years ago

7 0

Answer:

y= -1 and x = 10

Step-by-step explanation:

(1) x+3y=7

(2) 2x-4y=24

Clear x from the 1st equation: x=7-3y

And replace x from the 2do one: 2(7-3y)-4y=24

14-6y-4y=24

-6y-4y=24-14

-10y=10

y=-10/10

y=-1

Now we have y=-1, let's finde x:

x=7-3y

x=7-3(-1)

x=7+3

x=10

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2 years ago

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scoundrel [369]

Answer: $\frac{20}{3}\ minutes$ or $6 \frac{2}{3}\ minutes$

Step-by-step explanation:

For this exercise you can convert the mixed number to an improper fraction:

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2. Add the product obtained and the numerator of the fraction (This will be the new numerator).

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Then:

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Then, in order to calculate the time Calvin spent making faces at his stuffed tiger, you need to subract 30 minutes and $\frac{70}{3}$ minutes:

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2 years ago

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antoniya [11.8K]

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3 years ago

Plus $5 per day. The fee for the game booth is $50 plus $7 per day.

Marta_Voda [28]

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2 years ago

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