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Svetach [21]
3 years ago
5

Question 7 Unsaved What is the solution of the system? Use elimination. 3x – 4y = 9 –3x + 2y = 9

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
3 0
3X - 4Y = 9
-3X + 2Y = 9

first step is try to get rid of one of the variables and solve for the other one. In this example you dont need to manipulate the equations to get one variable to cancel.  

the x term cancels out. add both equations

-2y = 18
y= - 9

now we plug the y term back into an original equation and solve for x
3x - 4(-9)=9
 3x=-27
x=-9
hope that helps
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3 years ago
Construct a polynomial function with the stated properties. Reduce all fractions to lowest terms. Third-degree, with zeros of −3
RSB [31]

Answer:

\Large \boxed{-\dfrac{5}{4}(x+3)(x+1)(x-2)}

Step-by-step explanation:

Hello,

Based on the indication, we can write this polynomial as below, k being a real number that we will have to identify (degree = 3 and we have three zeroes -3, -1, and 2).

   \Large \boxed{k(x+3)(x+1)(x-2)}

We know that the point (1,10) is on the graph of this function, so we can say.

k(1+3)(1+1)(1-2)=10}\\\\4*2*(-1)*k=10\\\\-8k=10\\\\k=\dfrac{10}{-8}=-\dfrac{5}{4}

Then the solution is:

\large \boxed{-\dfrac{5}{4}(x+3)(x+1)(x-2)}

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

8 0
3 years ago
PLEASE HELP? I need help ASAP heh.
spayn [35]

Answer:

5/12

Step-by-step explanation:

12 total squares

5 shaded

5shaded to 12 total

5:12

or

5/12

5 0
2 years ago
Read 2 more answers
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icang [17]

Answer:

no error original system so good by

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2 years ago
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