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dusya [7]
3 years ago
6

Can you please explain what i have to do , or just simply be nice and give me all the answers ?

Mathematics
1 answer:
never [62]3 years ago
4 0

sorry about the other answer, it was spam to get points.

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Which of the following (x,y) pairs is the solution for the system of equations x+2y=4 and -2x+y=7
kakasveta [241]

Answer:

(-2 ,3)

Step-by-step explanation:

Step 1: Rewrite first equation

x = 4 - 2y

-2x + y = 7

Step 2: Substitution

-2(4 - 2y) + y = 7

Step 3: Solve <em>y</em>

-8 + 4y + y = 7

-8 + 5y = 7

5y = 15

y = 3

Step 3: Plug in <em>y</em> to find <em>x</em>

x + 2(3) = 4

x + 6 = 4

x = -2

3 0
3 years ago
A unit rate is a rate in which the _ in the comparison is 1 unit.
Nikitich [7]

Answer:

3.1415967382

Step-by-step explanation:

7 0
3 years ago
For the function f(x)=|x−7|−4, evaluate f(x+1).
GarryVolchara [31]

Answer:

\displaystyle{f(x+1)=|x-6|-4}

Step-by-step explanation:

To evaluate \displaystyle{f(x+1)}, substitute \displaystyle{x} to \displaystyle{x+1} so we should have:

\displaystyle{f(x+1) = |x+1-7|-4}

Evaluate the expression and finally, we have:

\displaystyle{f(x+1)=|x-6|-4}

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2 years ago
The conditional relative frequency table below was generated by column using frequency table data comparing the number of calori
Rudik [331]

There is an association because the value 0.15 is not similar to the value 0.55

For the nutritionist to determine whether there is an association between where food is prepared and the number of calories the food contains, there must be an association between two categorical variables.

The conditions that satisfy whether there exists an association between conditional relative frequencies are:

1. When there is a bigger difference in the conditional relative frequencies, the stronger the association between the variables.

2. When the conditional relative frequencies are nearly equal for all categories, there may be no association between the variables.

For the given conditional relative frequency, we can see that there exists a significant difference between the columns of the table in the picture because 0.15 is significantly different from 0.55 and 0.85 is significantly different from 0.45

We can conclude that there is an association because the value 0.15 is not similar to the value 0.55

5 0
3 years ago
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If I have a 93% as my subject grade and I get an 68% percent on a quiz as a quiz grade, what is my final subject grade.
trapecia [35]

Answer:

Password for the 1hdhhdhfhdhrhehjfujdjwjwjdjhf

Step-by-step explanation:

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3 years ago
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