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Illusion [34]
3 years ago
11

What does this mean 4x + 6y=9 12x + 18y=27

Mathematics
1 answer:
drek231 [11]3 years ago
8 0

Answer: Infinite solutions

Step-by-step explanation:

Solve4x+6y=9for x:

4x+6y=9

4x+6y+−6y=9+−6y(Add -6y to both sides)

4x=−6y+9

4x /4 = −6y+9 /4

(Divide both sides by 4)

x= −3 /2 y+ 9 /4

Substitute

−3 /2 y+ 9 /4

for x in 12x+18y=27:

12x+18y=27

12( −3 /2 y+ 9 /4 )+18y=27

27=27(Simplify both sides of the equation)

27+−27=27+−27(Add -27 to both sides)

0=0

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Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $60 per hour. The mechan
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Answer:

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Hope this is right. If not I apologize and please let me know:)

Step-by-step explanation:

First you would do 65+60=125. You do this to find how much they charge together. Then you would take the amount of money they make and divide that from 125: 1600/125=12.8. Now that you have 12.8 you would plug that in for each mechanic: 65 times 12.8=832 and 60 times 12.8=768. Now you have the amount of money each mechanic made and the amount of hours they worked.

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3 years ago
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FromTheMoon [43]

Answer:

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Step-by-step explanation:

Given equation is 3-x = 3(6x-9)

We need to find the value of x

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Add both sides x

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Now, add both sides 27

3+27=19x-27+27\\30=19x

Divide both sides by 19

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