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pogonyaev
3 years ago
10

Need help ASAP it’s for school

Mathematics
1 answer:
bixtya [17]3 years ago
8 0
Southern magnolia if I’m wrong plz let me know but good luck
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21x + 7y = 14 <br> -7y = 10 - 3x <br> btw its Elimination!
patriot [66]

\displaystyle\\\left \{ {{21x+7y=14} \atop {-7y=10-3x}} \right. \\\left \{ {{21x+7y=14} \atop {3x-7y=10}} \right. \\\\\text{We add 2 equations to remove y}\\21x+3x+7y+(-7y)=14+10\\24x=24=>x=1\\\text{We found x, now we can find y. Let's put x=1 into 1st equation}\\21\times1+7y=14\\7y=-7\\y=-1

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3 years ago
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What re linear angles
Evgen [1.6K]

Answer:

In geometry, a linear pair of angles is a pair of adjacent angles formed when two lines intersect each other. The linear pair of angles are always supplementary as they form on a straight line. In other words, the sum of two angles in a linear pair is always 180 degrees.

Step-by-step explanation:

I HOPE THIS HELPS

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3 years ago
PLEASE HELP .!!!!!!
Pani-rosa [81]

Answer: 112

Step-by-step explanation:

15x 7+7 = 112

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Question 3
storchak [24]
10 ...............................
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a mechanic equally divides 4 hours of his time to repair 8 cars how many cars does she repair in one hour
pantera1 [17]
If that is all the question is asking, simply solve the problem.

Divide 8 cars by 4 hours, giving you 2 cars every hour.

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