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Studentka2010 [4]
3 years ago
12

3. 3x59x? –15x² +27x

Mathematics
1 answer:
WARRIOR [948]3 years ago
5 0

Answer:

13/10 or 0.3•(599+90)

Step-by-step explanation:

1)33/10•59x-15x^2+27x(x+x=x^2)

2)33/10^2•59-15x^2+27x(factor our 33/10x from the expression)

3)33/10x•(11x-59-10x•5x+10•9)(11x•59=649x)

4)3/10x•(649x-50x+90)(subtract)

answer>>>3/10x or 0.3x•(599+90)

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Find all solutions to the following system of equations -y²+6y+x-9=0 ; 6y=x+27.Illustrate with a graph.
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Answer:

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Step-by-step explanation:

Hi!

First, let´s write the system of equations:

-y² + 6y + x -9 = 0

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The solutions of the system are the pairs (x, y) that satisfy both equations.

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Subtract 27 from both sides of the equation

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Now, we can replace x in the first equation and solve it for y:

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(alternatively you can solve the quadratic equation using the quadratic formula).

Now let´s find the value of x:

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The solution to the system is the pair (9, 6)

Please see the attached figure. The point where the curves intersect is the solution to the system.

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