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natulia [17]
3 years ago
8

-2x + y=9 -4x - y=9 What is the answer

Mathematics
2 answers:
Fed [463]3 years ago
7 0

Answer:

-6x = 18

x = -3

-2(-3) + y = 9

6 + y = 9

y = 3

(-3, 3)

Step-by-step explanation:

Dmitry_Shevchenko [17]3 years ago
3 0

-2x + y = 9

-4x - y = 9

----------------- +

-6x = 18

x = -3

-2x + y = 9

-2(-3) + y = 9

6 + y = 9

y = 3

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Ped
Stells [14]

So the correct statement is:

" The GCF of the numbers in each term in the expression is 2"

<h3></h3><h3>How to rewrite the expression as a product?</h3>

Here we have the expression:

12d - 26c

To rewrite ti as a product, we need to find the greatest common factor between 12 and 26.

The decomposition of these two numbers is:

12 = 2*2*3

26 = 2*13

The greatest common factor between the two numbers is 2, then we can rewrite:

12d - 26c = 2*(6d - 13c)

So the correct statement is:

" The GCF of the numbers in each term in the expression is 2"

If you want to learn more about greatest common factors:

brainly.com/question/219464

#SPJ1

6 0
1 year ago
Abigail mixes 2/3 pounds of walnuts with 3/5 puns of dried fruit.To create more of the same mixture how many pounds of walnuts d
Nataly_w [17]
Step one. create a common denominator.
ex. 15
walnuts = 10/15 dried fruit= 9/15

so if you had 15/15 pounds of dried fruit you would need 16/15 pounds of walnuts

which is 1 1/15 pounds of walnuts
8 0
3 years ago
The scores of the first 6 competitors in a
Kipish [7]

the Answer is -1 think

8 0
2 years ago
Read 2 more answers
Which equation models the data in the table?
Zinaida [17]
I think it’s direct variation y= 12/x i’m note 100% sure tho
3 0
3 years ago
Exercises 1–5
Degger [83]

Answer:  The estimated value for population mean rating based on these ten sampled ratings is 7.3 .

Step-by-step explanation:

Given : A random sample of size ten produced the following ratings in the computer games rating example in the  last lesson:

12, 5, 2, 4, 1, 4, 18, 10, 1, 16.

Let x denotes any value in the above data.

{\sum_{i=1}^{10}x_i}{10}=73

We know that the sample mean(\overline{x}) is the best estimate to the population mean(\mu).

Sample mean=\overline{x}=\dfrac{\sum_{i=1}^{n}x_i}{n}

Here , n= 10

\overline{x}=\dfrac{\sum_{i=1}^{10}x_i}{10}

\overline{x}=\dfrac{73}{10}=7.3

Therefore , the estimated value for population mean rating based on these ten sampled ratings= 7.3

6 0
3 years ago
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