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hichkok12 [17]
3 years ago
14

Use elimination metho to solve the system of equations ​

Mathematics
1 answer:
Nataly_w [17]3 years ago
4 0

Answer:

There are infinitely many solutions.

Step-by-step explanation:

3x + 2y = 7

-9x - 6y = -21

Now multiply the first equation by 3

3 × 3x + 2y = 7 ➡ 9x + 6y = 21 Now subtract second equation from first equation

9x + 6y - 9x - 6y = 21 - 21

0 = 0

The equation has infinitely many solutions meaning whatever value you write instead of x and y there will be solution.

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AleksAgata [21]
Your answer is Y= -x\5+7\15
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3 years ago
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pablos pizza shop made a profit of $495 each day for 12 days. what is the total profit for all 12 days
a_sh-v [17]

Answer:

$5940

Step-by-step explanation:

multiply 495 x 12 = 5940

Pablos pizza gain a profit of $5940 in 12 days.

4 0
2 years ago
NEED HELP ASAP I WILL GIVE BRAINLIEST
inn [45]

Answer: It's the second option

Step-by-step explanation:

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Ten weeks of data on the Commodity Futures Index are as follows.
IgorLugansk [536]

The analysis of time series is a process by which a set of observations in a time series is analyzed.

Part a: The time series plot is constructed both in de$mo$ and excel sheet.

b. The data appear to follow a horizontal pattern.

Part b: The trial and error is used to find the value of exponential smoothing coefficient that results in MSE= 0.009 which is less than 0.01.

The MSE in the first table is calculated using the average of the two previous years.

The MSE in the second table is calculated using the moving average

The MSE in the third table is calculated by using ∝= 0.4 and the value of alpha changes to different values as shown in the cell U20, V20 and W20.

The MSE is the mean squared error.

We find the error by subtracting <u><em>forecast</em></u> data from the <em><u>actual</u></em> data.

The forecasted data may be average of 2 years , moving average of 3 years or adding the multiplied chosen value of alpha with the actual data and the multiplied value of 1- ∝ with the forecasted value of data.

The error is then squared.

The squared error is then averaged which gives the MSE.

The values of ∝= 0.400641005, 0.40319659, 0.400641001 may give the best MSE values.

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Download xlsx
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> xlsx </span>
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8 0
2 years ago
The graph below is a portion of a complete graph. Which graph below is the complete graph assuming it is an even function
blondinia [14]
⭐Hola User_______________

⭐Here is your Answer. ...!!

_______________________

↪Actually welcome to the concept of the Graphs ..

↪Basically the given half graph is a parabolic graph of equation

↪y^2 = 4ax ...

↪thus the 3 graph option is the completion of the graph in the question ..

↪Option d.)

_________________________
7 0
3 years ago
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