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4 years ago

Please Help FAST

Mathematics

1 answer:

Aneli [31]4 years ago

6 0

Answer:

Step-by-step explanation:

1) 2x -y = 1 -------1

3x - y = -6 ------2

Subtract eqn 2 from eqn 1

-x = 1--6 = 7

x = -7

Put x= -7 in eqn 1

2*-7-y = 1

-14-y = 1

- y = 15

y = -15

2) 4x +2y = 10------1

y = 4x + 2--------2

Put eqn 2 in eqn 1

4x + 2 ( 4x+ 2) = 10

4x + 8x + 4 = 10

12x = 6

x = 6/12 = 1/2

Put x = 1/2 in eqn 2

y = 4* 1/2 + 2= 2 + 2

= 4

3) 6x - y = 2------1

y = 3x + 4---------2

Put eqn 2 in eqn 1

6x - (3x +4) = 2

6x - 3x - 4 = 2

3x = 6

x = 2

y = 3*2 + 4 = 6 + 4

= 10

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Answer:

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Step-by-step explanation:

If you do this algebraically then use formula:

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In other words, M= (-3 - (-1)) / (3 - (-5))

M= (-2) / (8)

M= -1/4 <-- This is your slope

To find y-intercept:

Substitute M in the slope-intercept equation (y=mx+b) with -1/4, y=-1/4x+b

Next, Substitute y and x with either point (-5, -1) or (3,-3)

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3 years ago

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Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

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Answer:

40 packages from Fred Motors
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Step-by-step explanation:

I would formulate the problem like this. Let f, a, c represent the numbers of packages bought from Fred Motors, Admiral Motors, and Chrysalis, respectively. Then the function to minimize (in thousands) is …

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4 years ago