4 years ago

Y= -5x-10 y=6x+12 solve by substitution

Mathematics

2 answers:

Mamont248 [21]4 years ago

4 0

Answer:

(-2,0) x=-2 y=0

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation

Hope this helps!

jasenka [17]4 years ago

4 0

Answer:

Step-by-step explanation:

y+10=−5x

− 5 y+10 =x

x=− 5 y+10

----------------

y−12=6x

y−12 /6=x

x= y−12 /6

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Montano1993 [528]

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3 years ago

Three consecutive even numbers have a sum between 84 and 96. Write an inequality to find the three numbers. Let n represent the

pantera1 [17]

The numbers are: n, (n+2) and (n+4);
we can suggest this inequation:
84<n+(n+2)+(n+4)<96

Now, we solve this inequation:
84<n+(n+2)+(n+4)<96
84<3n+6<96

1)
3n+6>84
3n+6-6>84-6
3n>78
3n/3>78/3
n>26

2)
3n+6<96
3n+6-6<96-6
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3n/3<90/3
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The solution is:
26<n<30

Then: n=28

The numbers will be: 28,30 and 32.

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3 years ago

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Montano1993 [528]

I hope this is right

Answer:

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Step-by-step explanation:

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3 years ago