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storchak [24]
2 years ago
14

1. Explain in a complete sentence if the point (2, -4) is the solution to the system of equations. x + y = -2 2x – y = 8

Mathematics
1 answer:
Temka [501]2 years ago
7 0
So, it says x + y = -2
we just plug in the numbers so,
2 + - 4 = -2
This equation is true and can also be written as
2 - 4 = -2

It also then says that 2x - y = 8
Again, you just plug in the numbers
2 * 2 - (-4) = 8 
This equation is true and can also be writen as,
2*2 + 4 = 8
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The sum of 69 and 42 is five more than the difference of 146 and a number. Calculate the value of the unknown number.
Len [333]
As an equation, we have:
69+42=5+(146-x)

You just have to simplify:

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106=146-x
-40=-x
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Your unknown number is 40
5 0
3 years ago
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lorasvet [3.4K]
4. Period with the digits 913 is called thousands period.
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3 0
3 years ago
Read 2 more answers
What's the answer to 1&2 plzz
Dmitrij [34]
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4 0
3 years ago
a cell phone company offers two different monthly plans.plan a charges $41 for unlimited cell phone minutes plus $0.10 per text
tiny-mole [99]

41+0.10x = 31+0.15x

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200*0.15 = 30+31 = 61

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6 0
2 years ago
What was a effect on the war of 1812 <br>PLEASE HURRY AND HELP ME ​
labwork [276]

Answer:

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Step-by-step explanation:

8 0
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