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castortr0y [4]
2 years ago
8

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

Mathematics
2 answers:
bearhunter [10]2 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]2 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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Find the points of intersection of the graphs of the equations.
AURORKA [14]

Answer:

To find the point of intersection, just solve for x and y in the equations

so since x - y = -5

x = y - 5

now that we have a value of x, we will substitute x with in in the other equation

<em>5x + 3y = -9</em>

<em>5(y-5) + 3y = -9</em>

<em>5y - 25 + 3y = -9</em>

<em>8y = 16 </em>

y = 2

now use this value of y in the equation we made for x

<em>x = y - 5</em>

<em>x = 2 - 5</em>

x = -3

Hence, the point of contact is (-3 , 2)

4 0
3 years ago
Pls help I have no idea what I’m doing
olganol [36]

Answer:

1800

Step-by-step explanation:

61 around to 60 and 29 rounds to 30. so

60 ×30=1800

8 0
3 years ago
Find the quotient using long division<br> 6x2 - 8x + 5/<br> X-2
joja [24]

Step-by-step explanation:

hope this helps have a great day!

3 0
2 years ago
WILL GIVE BRAINLIEST!!!!!!! Kate has 4 feet of rope. She cuts the rope into pieces that are each
Delvig [45]
<h2>Answer:</h2>

7

<h2>Step-by-step explanation:</h2>

4 1/5 ÷ 3/5 = 7

Kate cut 7 pieces of rope.

<h2>#BrainliestAnswer</h2><h2>#CarryOnLearning</h2>
5 0
2 years ago
Branliest offered
blsea [12.9K]
The circumference can be obtained fairly easily by simply substituting the d in c = πd for the colony's given diameter of 12 mm. Performing that calculation using the approximation of π ≈ 3.14, we obtain a circumference of 12 x 3.14 = 37.68 mm.

To find the radius, remember how the diameter and radius of a circle are defined. The radius is a length extending from the center of a circle to a point on its circumference, and a diameter is a line extending from one point on the circle's circumference to an opposite point, passing through the circle's center along the way. The diameter can, in this way, be defined as twice the length of the radius, which means we can find the radius of a circle by taking half of its diameter. In this case, our diameter is 12 mm, so our radius would be 6 mm.
7 0
3 years ago
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