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damaskus [11]
3 years ago
13

Solve the simultaneous equations: 5x-3y=12 2x-y=5

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
8 0
5x-3y=12
2x-y=5
Multiply equation II by 3;
5x-3y=12
6x-3y=15
Subtracting equation II from equation 1;
x=3
2x-y=5
2(3)-y=5
6-y=5
6-5=y
y=1
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He price of a shampoo, cut, and style at the hairstyling salon where you work is $18.00. You generally get a 20% tip from each c
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Answer:

total earning is  $64.80

Step-by-step explanation:

Price of one work = $18.00

Payment  by owner = 1/4 of $18.00

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                                  = $4.50

Earning by tip =  20% of $18.00 =  20/100 x18 = 3.60

Total earning from one work   =   $4.50+$3.60

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4 0
3 years ago
What is the greatest common factor of 15 and 31?
andreyandreev [35.5K]

Answer:

The greatest common factor of 15 and 31 is 1.

Step-by-step explanation:

What are the factors of 15?

1, 15 and 3, 5

What are the factors of 31?

31 and 1

We can see that 31 and 15 only share on common factor, which is 1.

1 is the greatest and the only factor!

8 0
3 years ago
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sineoko [7]

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Step-by-step explanation:

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4 years ago
-0.59x+0.39x=5.8 I need help
galina1969 [7]

Answer: x = -29

Step-by-step explanation:

-0.59x+0.39x=5.8

Collect like terms

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Divide both sides of the equation by -0.2

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Response to user in comments:

-0.59+0.39=-0.2 that is a fact

-0.2/-0.2=1 that is a fact

5.8/-0.2= - 29 that is a fact

These are the facts about the steps of the equation. Solving Steps for Solving the Equation

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