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Ray Of Light [21]
4 years ago
9

Which ones apply? And this answer is an emergency !!!!

Mathematics
1 answer:
Nonamiya [84]4 years ago
5 0

Answer:

<h2>First, second and fifth option can be selected.</h2>

Step-by-step explanation:

The given equations are Ax + By = C and Dx + Ey = F

If one multiple of equation 1 replaces it, then it is nothing but the same equation itself, hence first option can be selected.

If the sum of equation 1 and 2 will replace equation 1 then, it will show some additional data in the changed equation. Hence, second option can also be selected.

If we replaced the equation 1 with (A + D)x + By = C then the system of equations will take us to a different solution. Hence, the third option can not be selected.

Fourth option is same as the third option, here the difference is just the another variable is chosen. It can not be selected.

Fifth option can be selected as it changes the equation 1 by multiplying the given data of 1 and 2 with some value and adding them.

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You and your friend are rolling number cubes. Each cube has 6 sides with the numbers 1 to 6. If a sum of 7 is rolled, your frien
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You don't list the "sums listed below" but I can still help you.
There are 6 ways to get a sum of 7 using a pair of dice:
1+6
6+1    You might be asking why 2+5 isn't the same as 5+2
2+5      Imagine the dice are different colors.  Is a red 2 and green 5 the
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3+4
4+3
You need two numbers that also provide 6 ways to win.  One pair that would work is 11 and 9   There are two ways to make 11 (5+6) and (6+5)  and there are four ways to make 9 (3+6), (6+3) (4+5) and (5+4) - that's a total of six ways.  So to balance your friend's 7 - you could go for sums of 11's and 9's.  Check the choices you were given and find the numbers (it could be three numbers like 2,3, and 12) that give you 6 ways to win.
Here are the numbers and their ways
Sum of the dice                          Ways to get it
2                                                      1
3                                                      2
4                                                      3
5                                                      4
6                                                      5
7                                                      6
8                                                      5
9                                                      4
10                                                    3
11                                                    2
12                                                    1


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3 years ago
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Solve for x:
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\frac{2x}{5}  =  \frac{1}{15} - 1

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Multiply by 15 on both side
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x = - \frac{7}{3}

Answer \: x = - \frac{14}{6} \ or - \frac{7}{3}
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