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zimovet [89]
3 years ago
11

Solve the systems of equation using substitution:y y= -3x 4x + y = 2

Mathematics
2 answers:
Vlada [557]3 years ago
4 0
Put the first equation into the second

4x -3x = 3

x = 3

plug in 3

-3(3) = -9

y = -9
AlladinOne [14]3 years ago
4 0
The answer is x=2you can check it by Friday Turing the answer into the original problem

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Answer correct for brainliest and also get a thanks ! :-) please help !!
GREYUIT [131]

 

Y =2x +14

-4x –y = 4 so y = -4x – 4


2x + 14 = -4x – 4

2x + 4x = -4 - 14

6x = -18

x = -18/6

x = -3

Y =2x +14

y = 2(-3) +14

y= -6 +14

y=8


answer:

y-coordinate is 8

3 0
3 years ago
Is the<br> statement (-1)n = -1 true for any positive integer n? Explain.
Rashid [163]

Answer:

it has to equal -1 x= to -1 parenthesees

1 times -1= -1 its true for that 1 answer but not the others

7 0
3 years ago
Solve. x + 9 = –15 x = [1] <br><br> help please
max2010maxim [7]

Answer:

1/2

Step-by-step explanation:

x + 9 = -15x = [1]

x - x + 9 = -15x -x = 1

9 - 1 = -16x

8 = 16x

8/16 = 16/16x

1/2 = x

Hope this helps

7 0
3 years ago
Read 2 more answers
By what number should-15/56 be divided to get -5/6<br><br>pls pls pls pls I need your help ​
mr_godi [17]

Answer:

The desired divisor is n = 21

Step-by-step explanation:

Let that number be n.  Then:

-15/56        -5

---------- = ---------

     n            6

Through cross-multiplication we get:

(-15/56)*6 = -5n, which reduces to:

(-15)(7) = -5n, or 3(7) = n

The desired divisor is n = 21

6 0
3 years ago
Add the two expressions <br> -4.2x+3 and 2.5x-6<br><br><br> please help me with this
dalvyx [7]

-1.7×-6 is the answer. Hope this helps.

6 0
3 years ago
Read 2 more answers
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