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Lisa [10]
3 years ago
9

Solve the system of equations below by graphing both equations with a pencil and paper. What is the solution? y=3x-4 y=-2x+1

Mathematics
1 answer:
suter [353]3 years ago
6 0

\left\{\begin{array}{ccc}y=3x-4\\y=-2x+1\end{array}\right\\\\y=3x-4\\for\ x=0\to y=3(0)-4=-4\to(0;-4)\\for\ x=2\to y=3(2)-4=2\to(2;\ 2)\\\\y=-2x+1\\for\ x=0\to y=-2(0)+1=1\to(0;\ 1)\\for\ x=2\to y=-2(2)+1=-3\to(2;\ -3)

Look at the picture.

Answer: x = 1; y = -1 → (1; -1)

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Help pleaseeeeeeeeee
Korolek [52]

Answer:

2x+2x is 4 +3x is 12+ 1 is 13 + 3 is 15 - 2 is 13 -1 is 12

so x=15

and y=12

7 0
3 years ago
3(2c + 5) = 39<br> What is the answer ?
sesenic [268]

Answer:

c=1

Step-by-step explanation:

Simplifying

3 + 2c = 5

Solving

3 + 2c = 5

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '-3' to each side of the equation.

3 + -3 + 2c = 5 + -3

Combine like terms: 3 + -3 = 0

0 + 2c = 5 + -3

2c = 5 + -3

Combine like terms: 5 + -3 = 2

2c = 2

Divide each side by '2'.

c = 1

Simplifying

c = 1

3 0
3 years ago
Read 2 more answers
The area of a rectangle is 63 m2 , and the length of the rectangle is 5 m more than double the width. find the dimensions of the
Kamila [148]
If you let x represent the width of the rectangle, then you can write the equation for area as
.. x(2x +5) -63 = 0
This has positive solution x=4.5.

The rectangle is 4.5 meters by 14 meters.

7 0
3 years ago
Find the center, vertices and foci for the ellipse 4x^2 + 25y^2 = 100
Fantom [35]

Answer: center (0,0), vertices (+/-5,0), foci (+/-4.6,0)

Step-by-step explanation:

5 0
3 years ago
Or which equation would x = 4 be a solution?
ElenaW [278]

2x+7=22\ \ \ \ |-7\\2x=15\ \ \ \ \ |:2\\x=7.4\neq4\\----------------------\\6x\div8=3\ \ \ \ |\cdot8\\6x=24\ \ \ \ |:6\\x=4\\-------------------\\8-3x=20\ \ \ \ |-8\\-3x=12\ \ \ \ |:(-3)\\x=-4\neq4\\---------------------\\2x+8=4\ \ \ \ \ |-8\\2x=-4\ \ \ \ \ |:2\\x=-2\neq4\\\\Answer:\ 6x\div8=3

Other method.

Enter the value of x for each equation and check the equality of the pages of the equation

2x+7=22\\L=2(4)+7=8+7=15;\qquad R=22\qquad L\neq R\\\\6x\div8=3\\L=6(4)\div8=24\div8=3;\qquad R=3;\qquad L=R\\\\8-3x=20\\L=8-3(4)=8-12=-4;\qquad R=20;\qquad L\neq R\\\\2x+8=4\\L=2(4)+8=8+8=16;\qquad R=4;\qquad L\neq R

6 0
3 years ago
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