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noname [10]
3 years ago
13

What is 2x-3y=-1 y=x-1

Mathematics
2 answers:
Vika [28.1K]3 years ago
8 0
If you're looking for the solution to the system of equations, here's how we solve using substitution
We know that y = x - 1, so we can plug that into the first equation giving
2x - 3(x-1) = -1
Now distribute the 3 giving 2x - 3x + 3 = -1. After combining like terms we get -x + 3 = -1. Now subtract 3 from both sides, -x = -4, and multiply both sides by -1 to make x positive. x = 4
Now we can plug that into the second equation to get y
y = x - 1, and we know that x = 4, so y = 4 - 1, y = 3. The solution is (4, 3)
blondinia [14]3 years ago
3 0
2x - 3y = -1
         y = x - 1

             2x - 3y = -1
     2x - 3(x - 1) = -1
2x - 3(x) + 3(1) = -1
       2x - 3x + 3 = -1
               -x + 3 = -1
                    - 3   - 3
                     -x = -4
                     -1    -1
                      x = 4

      y = x - 1
      y = 4 - 1
      y = 3
(x, y) = (4, 3)
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The answer here is 13. 20 divided by 4 is 5 /‘d 2 to tbe third power is 8. It is 5+8 which is 13
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A healthy school lunch that is $0.75 more than the current lunch has a higher economic
Stells [14]

The fact that the healthy school lunch has a higher price than the current lunch means that it has a <u>higher economic cost.</u>

<h3>What is an economic cost?</h3><h3 />

An economic cost in this scenario, is the increased cost that comes with a commodity having greater perceived value.

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5 0
3 years ago
Ayuda por favor por favor​
Arisa [49]

Answer

7. 30

8. 54

Step-by-step explanation:

For 7 do 2x+3x=90 because it is a right angle

then solve for x and get 15

to get the angle you are looking for multiply 2 by 15

and get the answer 30

For 8 to find the value of x you would need to...

add (4x+6) + (11x-6)= 180 because 180 is a straight angle.

Then simply solve for x and get 15x=180 which equals 12

The to get the angle you plug it in to (4x+6) and get the answer 54

7 0
3 years ago
The following formula relates the temperature in Celsius (C) and the temperature in kelvins (K).
Mademuasel [1]

Answer:

a. K=300.15

b. 300 Kelvin is greater

Step-by-step explanation:

a. If C=23. Place it in C=k-273.15

K=C+273.15 = 27+273.15

K=300.15

b. Put C=25, K=C=273.15

K=298.15 which is lesser than 300 Kelvins

7 0
3 years ago
The midpoint is (blank,blank)
sveta [45]

Answer:

The answer to your question is Midpoint = (0, 1)

                                                    Equation of the bisector    y = 2x + 1

Step-by-step explanation:

Data

P (-4, 3)

Q (4, -1)

Process

1.- Find the midpoint

Xm = (-4 + 4)/2

Xm = 0/2

Xm = 0

Ym = (3 - 1)/2

Ym = 2/2

Ym = 1

Midpoint = (0, 1)

2.- Equation of the line

slope = (-1 - 3) / (4 + 4)

          = -4/8

          = -1/2

But the new line is perpendicular so the new slope is

       m = 2

Equation of the new line

        y - y1 = m(x - x1)

        y - 1 = 2(x - 0)

        y - 1 = 2x

        y = 2x + 1

6 0
3 years ago
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