3 years ago

2x+3y=105 And x+2y=65 what is the value for y

2 answers:

8 0

Yas! systems of equations
convert one equation so that a single variable is one one side
x = 65 - 2y
plug it in the other equation
2(65 - 2y) + 3y = 105
130 - 4y + 3y = 105
130 - y = 105
25 = y

Romashka-Z-Leto [24]3 years ago

6 0

2x+ 3y = 105, x + 2y =65

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algol [13]

Answer:

$\boxed{\sf{4}}}$

Step-by-step explanation:

Use a slope form.

<u>Slope:</u>

$\sf{\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{rise}{run} }$

y₂ = (17)

y₁ = (1)

x₂ = (2)

x₁ = (-2)

Then, rewrite the problem.

Solve.

$\sf{\dfrac{17-1}{2-(-2)}=\dfrac{16}{4}=\dfrac{16\div4}{4\div4}=\dfrac{4}{1}=\boxed{\sf{4} }$

Therefore, the slope is 4, which is our answer.

I hope this helps you! Let me know if my answer is wrong or not.

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Rama09 [41]

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Contact [7]

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Vladimir79 [104]

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Ulleksa [173]

Answer:

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Step-by-step explanation:

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Por vender $600 gana 6 veces mas que por vender $100.

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Respuesta: $180

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