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KIM [24]
4 years ago
7

Solve the system of equations below. 5x + 2y = 9 2x - 3y = 15

Mathematics
1 answer:
riadik2000 [5.3K]4 years ago
3 0

Answer:

(3,-3)

y= -3

x= 3

Step-by-step explanation:

5x+2y=9

2x-3y=15

solve the equation

x=9/5-2/5y

2x-3y=15

substitute the value of x into an equation

2(9/5-2/5y)-3y=15

distribute

18/5-4/5y-3y=15

subtract -4/5 to -3

18/5-19/5y=15

subtract 18/5 from both sides

-19/5=57/5

divide both sides by -19/5

y= -3

substitute the value of y into an equation

x=9/5-2/5(-3)

distribute

x=9/5+6/5

add 9/5 to 6/5

x=3

--------

(3,-3)

--------

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Density = 70000 people/2827.43 mi^2

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4 0
3 years ago
Write an equation to represent the following statement.
svetoff [14.1K]

Answer/explanation:

60=5k 

Is the equation because the word is means equals, so we add an equal sign after the 60. Five times greater simply means multiply so we multiply 5 and k.

To solve the equation, you would need to divide both sides by 5 to isolate the variable

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4 years ago
The height of a cylindrical can is 4 7/16 inches and the radius is 3 inches. Which measurement is closest to the total surface a
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Answer:

140.19

Step-by-step explanation:

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5 0
2 years ago
Read 2 more answers
Solve: 2x+4y=20 and 2x-y=4
fgiga [73]
Answer:
(x, y) = (18/5, 16/5)
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4 0
3 years ago
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X over 2x+1. What is x?
tatiyna

Answer:

x= - \frac{1}{2}

Step-by-step explanation:

Given:

\frac{2x+1}{x}

Let us assume that this equation is equal to 0.

Hence \frac{2x+1}{x}=0

Now Solving the above equation we get,

\frac{2x+1}{x}=0\\\\2x+1=0\\2x=-1\\x= - \frac{1}{2}

Hence by solving the equation we get x= - \frac{1}{2}

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