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vredina [299]
3 years ago
5

6x+6y=-6, 5x+y=-13Show your process pleaseSolve the linear equation​

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
5 0

Answer: Rewrite equations:

5x+y=−13;6x+6y=−6

Step: Solve5x+y=−13for y:

5x+y=−13

5x+y+−5x=−13+−5x(Add -5x to both sides)

y=−5x−13

Step: Substitute−5x−13foryin6x+6y=−6:

6x+6y=−6

6x+6(−5x−13)=−6

−24x−78=−6(Simplify both sides of the equation)

−24x−78+78=−6+78(Add 78 to both sides)

−24x=72

−24x

−24

=

72

−24

(Divide both sides by -24)

x=−3

Step: Substitute−3forxiny=−5x−13:

y=−5x−13

y=(−5)(−3)−13

y=2(Simplify both sides of the equation)

Answer:

x=−3 and y=2

Step-by-step explanation:

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What is this graph ?
Eva8 [605]

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept

x-y=1      <em>subtract x from both sides</em>

-y=-x+1     <em>change the signs</em>

y=x-1

It's a linear function.

We need only two points to plotting a graph.

We choose any three values of x and calculate y.

for\ x=0\to y=0-1=-1\to(0,\ -1)\\for\ x=1\to y=1-1=0\to(1,\ 0)\\for\ x=2\to y=2-1=1\to(2,\ 1)

4 0
3 years ago
20 points! Simplify: 2y(2y+3yx^{2} )-y^{2} (3-y) please show work!
arlik [135]

Answer:

8x2y - 6x2 - 8xy2 - y2

Step-by-step explanation:

Equation at the end of step  1  :

 (((((5•(x2))•y)-(5•(x2)))+(3y•(x2)))-(3•(y2)))-((((x2)+(y2))+(8x•(y2)))-3y2)

Step  2  :

Equation at the end of step  2  :

 (((((5•(x2))•y)-(5•(x2)))+(3y•(x2)))-(3•(y2)))-((((x2)+(y2))+23xy2)-3y2)

Step  3  :

Equation at the end of step  3  :

 (((((5•(x2))•y)-(5•(x2)))+(3y•(x2)))-3y2)-(x2+8xy2-2y2)

Step  4  :

Equation at the end of step  4  :

 (((((5•(x2))•y)-(5•(x2)))+3x2y)-3y2)-(x2+8xy2-2y2)

Step  5  :

Equation at the end of step  5  :

 (((((5•(x2))•y)-5x2)+3x2y)-3y2)-(x2+8xy2-2y2)

Step  6  :

Equation at the end of step  6  :

 ((((5x2•y)-5x2)+3x2y)-3y2)-(x2+8xy2-2y2)

Step  7  :

Final result :

 8x2y - 6x2 - 8xy2 - y2

4 0
3 years ago
What expression is equivalent to 2(x+4)
Arte-miy333 [17]

Answer:

2x + 8

Step-by-step explanation:

solve by using the distributive property

2(x + 4) = (2)(x) + (2)(4)

2x + 8

5 0
3 years ago
20 PTS! PLZ HELP ME!
SVEN [57.7K]
The answer should be 14 i did it in my head you should check with a calculator do 8*175 and then divide that by 100

6 0
3 years ago
Which operation should you perform first when you simplify 63-(2+54x6) / 5
koban [17]

Answer:

Multiply 54 and 6

Step-by-step explanation:

6 0
4 years ago
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