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amid [387]
3 years ago
7

To eliminate the y-terms and solve for x in the fewest steps, by which constants should the equations be multiplied by before

Mathematics
1 answer:
Semenov [28]3 years ago
7 0

Answer:

To eliminate y- terms

Multiply equ(1) by 3 and equ(2) by -4

To eliminate y- terms

Multiply (1) by 3 and (2) by -5

Step-by-step explanation:

5x - 4y = 28 (1)

3x - 3y = 30 (2)

To eliminate y- terms

Multiply equ(1) by 3 and equ(2) by -4

15x-12y=84

-12x+12y= -120

Add equ (3) and (4)

3x=84-120

3x=-36

x=-36/3

= -12

x=-12

To eliminate x- terms

5x-4y=28

3x-3y=30

Multiply (1) by 3 and (2) by -5

15x-12y=84

-15x+15y=-150

Add the new equation

3y= -66

y= -22

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Yolanda's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Yolanda $5.20 per pound, and t
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Answer:

78 pounds

Step-by-step explanation:

Let's say Yolanda makes a pounds of Type A coffee and b pounds of Type B coffee. Since the total number of pounds is 130, we can write the equation:

a + b = 130

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We can now solve the system of equations:

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Manipulate the first equation by subtracting b from both sides:

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Substitute 130 - b for a in the second equation:

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<em>~ an aesthetics lover</em>

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3 years ago
What is the answer and why is it true?
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Step-by-step explanation:

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