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romanna [79]
2 years ago
7

How to solve this one​

Mathematics
2 answers:
Stells [14]2 years ago
7 0

Answer:

(-5,1)

Step-by-step explanation:

Add it together

3x - 2x = x

y - y = 0

9 - 14 = -5

x = -5

Choose a random equation, doesn't matter.

3x + y = -14

3(-5) + y = -14

-15 + y = -14

y = -14 + 15

y = 1

galben [10]2 years ago
7 0
First solve for y on one equation.

3x + y = -14

Y = -14 - 3x

Now plug this solution for y into the second equation like so:

-2x - (-14 -3x) = 9

Simplify by multiplying (-1) to the values inside of the parentheses.

-2x + 14 + 3x = 9

Simplify

X + 14 = 9

X = -5

Now use this value for x in either equation and solve

3(-5) + y = -14

-15 + y = -14

Y = 1

Check your work by adding the found x and y values into either equation.

-2(-5) - (1) = 9

10 - 1 = 9

9 = 9

X = -5
Y = 1

I am starting to do tutoring so if you would like consistent additional help make a comment and let me know
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Melania has two jobs. During the day she works as an office clerk, and in the evening she works as a cashier. her office job pay
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Lets x = # of hours Melania  works at <span>office clerk
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7 0
3 years ago
Jamie received £26 pocket money last week. He spent it as follows: 10% on sweets, 25% on magazines 15% on games How much did Jam
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Answer:

Total money left with Jamie = £13

Step-by-step explanation:

Jamie received pocket money = £26

He spent on sweets = 10% of total pocket money

Expense on magazines = 25% of the total money

Expense on games = 15% of the pocket money

Total expenditure on sweets, magazines and games = \frac{10}{100}+\frac{25}{100}+\frac{15}{100}

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