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labwork [276]
3 years ago
10

Solve the system of equations. ​

Mathematics
1 answer:
vampirchik [111]3 years ago
8 0

Answer:

(0, 6 )

Step-by-step explanation:

Given the 2 equations

- 6y + 11x = - 36 → (1)

- 4y + 7x = - 24 → (2)

Multiplying (1) by 4 and (2) by - 6 and adding the result will eliminate y

- 24y + 44x = - 144 → (3)

24y - 42x = 144 → (4)

Add (3) and (4) term by term

2x = 0 ⇒ x = 0

Substitute x = 0 in either of the 2 equations and solve for y

Substituting in (1)

- 6y + 11(0) = - 36, that is

- 6y = - 36 ( divide both sides by - 6 )

y = 6

Solution is (0, 6 )

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Answer:

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Step-by-step explanation:

Rules for using scientific notation:

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3 years ago
Can you help me with this question please? I will reward 20 points for best answer.
swat32

Answer:

Demand: q = -50p + 1200

Supply: q = 40p

Step-by-step explanation:

First let's define our variables.

q = quantity of T-shirts

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We know that when p = 12, q = 600.  When p increases by 1, q decreases by 50.  So this is a line with slope -50 that passes through the point (12, 600).  Using point-slope form to write the equation:

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Converting to slope-intercept form:

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Similarly, we know that when p = 9.75, q = 600 - 210 = 390.  When p increases by 1, q increases by 40.  So this is a line with slope 40 that passes through the point (9.75, 390).  Using point-slope form to write the equation:

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Converting to slope-intercept form:

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q = 40p

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Step-by-step explanation:

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