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bija089 [108]
4 years ago
10

What is the solution of the system of equations? y= -3x+8 y= -5x-2

Mathematics
2 answers:
Crazy boy [7]4 years ago
5 0
Y = -3x+8
y = -5x-2
------------
y = 5(-3x+8)
y = 3(-5x-2)
---------------
y = -15x+40
y = -15x-6
--------------
y = -15x+40       
       -      - 
y = -15x-6
--------------
y = 46
<span>
y = -3x+8
</span>46 = -3x+8
-8           -8
---------------
38 = -3x
----    ----
-3      -3
12.666...=x
(<span>12.666.,46) </span>← Answer
belka [17]4 years ago
5 0
Remember you can do anything to an equation as long as you do it to both sides


notice that they both equatl y
therefor they are equal
-3x+8=y=-5x-2
-3x+8=-5x-2
add 5x to both sides
2x+8=-2
minus 8 from both sides
2x=-10
divide by 2
x=-5

plug in -5 for x in any equation to evaluate y

y=-3x+8
y=-3(-5)+8
y=15+8
y=23

the solution is
x=-5
y=23

(-5,23)
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8 0
3 years ago
What is the probability that the sun will not rise Tomorrow plz explain?
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Step-by-step explanation:

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6 0
3 years ago
Sam and Bethan share £54 in the ratio 5:4 how much dose each get
Agata [3.3K]
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3 0
3 years ago
Can an answer be incorrect even if it looks reasonable?
Anna [14]

Answer:

  • <em>Yes, an answer can be incorrect even it it looks reasonable.</em>

Explanation:

Yes, an answer can be incorrect even if it looks reasonable, for two main reasons:

  • The assumptions (premises or statements) on which the reasoning is based are wrong.
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To avoid the first condition you must be sure about the facts, which may be information from an experiment that you performed or from a source. In order for an answer be correct, make sure your premises are true.

Dealing with the second condition, a fallacy is an argument that seems strictly logical but is misleading: you must learn which reasonings are really valid; this is, that the conclusion unequivocally follows from the premises.

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3 years ago
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galina1969 [7]

Answer:

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To find answer first find the area of the circle, then add the 18.

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254.34+18=272.34

Hope this helps!!! :)

8 0
3 years ago
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