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2 years ago

Use the linear combination method to solve the system of equations.

Mathematics

2 answers:

laiz [17]2 years ago

6 0

Answer:

Figures

figure 2.1

Figure 2.1

figure 2.10

Figure 2.10

figure 2.12

Figure 2.12

figure 2.13

Figure 2.13

Step-by-step explanation:

guapka [62]2 years ago

6 0

Y=-3.34 x=-8.89

Combine two equations

0x-1.5y=5.01

-1.5y/-1.5=5.01/-1.5

y=-3.34

Plug in the y value for in one of the equations to solve for x.

-2.1x + 4(-3.34) = 5.3

-2.1x -13.36= 5.3

-2.1x = 18.66

-2.1x/-2.1 = 18.66/-2.1

x=-8.89

Plug in both values to validate the answer. Keep in mind there was rounding so the equation will not 100% be correct.

2.1(-8.89) - 5.5(-3.34) =

-18.66 + 18.37 = -0.29

-2.1(-8.89) + 4(-3.34) = 5.309

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2 years ago

Solve each system of equation using any method.<br> 7 x + y = 5 2x - y = 4

nexus9112 [7]

Answer:

x = 1

y= -2

Step-by-step explanation:

to solve this system of equation , simultaneously using the substitution method

we say let

7 x + y = 5 ............................................. equation 1

2x - y = 4 ................................................... equation 2

from equation 2

2x - y = 4 ................................................... equation 2

2x - 4 = y

y = 2x -4.......................................................... equation 3

put the value of the y = 2x -4 into equation 1

7 x + y = 5 ............................................. equation 1

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divide both sides by the coefficient of x which is 9

9x/9 = 9/9

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substitute the value of x = 1 into equation 3

y = 2x -4.......................................................... equation 3

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y = 2 - 4

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to check if you are correct put the value of x and y into any of the equations and you will see that the left hand side will be equal to the right hand side.

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2 years ago

Graph the image of this figure after a dilation with a scale factor of 2 centered at the origin.

den301095 [7]

Answer:

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