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castortr0y [4]
3 years ago
8

Solve the system using substitution: y = -6x + 7 3x – 2y = 16 helppp

Mathematics
2 answers:
bearhunter [10]3 years ago
7 0

Answer:

x=-6 y=-1

Step-by-step explanation:

// Solve equation [2] for the variable  y  

 

 [2]    y = -x - 7

// Plug this in for variable  y  in equation [1]

  [1]    3x - 2•(-x -7) = -16

  [1]    5x = -30

// Solve equation [1] for the variable  x  

  [1]    5x = - 30  

  [1]    x = - 6  

// By now we know this much :

   x = -6

   y = -x-7

// Use the  x  value to solve for  y  

   y = -(-6)-7 = -1  

Solution :

{x,y} = {-6,-1}

marissa [1.9K]3 years ago
6 0

Answer: 1 .x=-1/6y+7/6 (2.x=2/3y+16/3

Step-by-step explanation:

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almond37 [142]
It would be two places to the right of 0 because -3+5=2
6 0
2 years ago
What is the explicit formula for this sequence?
ddd [48]

Answer:

a_n=-7+4(n-1)

or

a_n=-7+(n-1)(4)

Step-by-step explanation:

-7,-3,1,5,... is a arithmetic sequence.

Arithmetic sequences have a common difference. That is, it is going up by 4 each time.

When you see arithmetic sequence, you should think linear equation.

The point-slope form of a line is y-y_1=m(x-x_1).

m is the common difference, the slope.

Any they are using the point at x=1 in the point slope form.  So they are using (1,-7).

So let's put this into our point-slope form:

y-(-7)=4(x-1)

y+7=4(x-1)

Subtract 7 on both sides:

y=-7+4(x-1)

So your answer is

a_n=-7+4(n-1)

6 0
3 years ago
There is a direct path from Gayle's house to the store. Due to construction, the direct route is closed and Gayle must travel 6
Elina [12.6K]

Answer:

<em><u>c2=10</u></em>

Step-by-step explanation:

8^2+6^2=c2

64+36=120

c2=square root of 120..which is 10

3 0
3 years ago
Jessica always uses the same ratio of green beads to blue beads when she makes necklaces. The graph shows these equivalent ratio
sveta [45]

Answer:

table 2

Step-by-step explanation:

see attached

7 0
3 years ago
Read 2 more answers
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Alja [10]
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solve

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hope this helps
7 0
3 years ago
Read 2 more answers
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