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3 years ago

RESOLVER LOS SIGUIENTES SISTEMAS DE ECUACIONES APLICANDO EL METODO DE SUSTITUCION

Mathematics

1 answer:

kiruha [24]3 years ago

3 0

Answer:

x = 1/2; y = 1/3

Step-by-step explanation:

2x + 3y = 2 Eq. 1

-6x + 12y = 1 Eq. 2

Eq. 1

2x + 3y = 2

2x = -3y + 2

x = -3/2 y + 1

Eq. 2

-6x + 12y = 1

De Eq. 1 sabemos que x = -3/2 y + 1

-6x + 12y = 1

-6(-3/2 y + 1) + 12y = 1

9y - 6 + 12y = 1

21y - 6 = 1

21y = 7

y = 7/21

y = 1/3

Eq. 1

2x + 3y = 2

2x + 3(1/3) = 2

2x + 1 = 2

2x = 1

x = 1/2

Respuesta: x = 1/2; y = 1/3

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sukhopar [10]

Answer:

Step-by-step explanation:

7t-3t+4t-5t

Combine like terms

7t -3t = 4t and substitute back into the expression

4t +4t -5t

4t+4t = 8t and substitute back into the expression

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7 0

3 years ago

Ln a+3 + ln a-3 = ln 16

Lilit [14]

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and\qquad \textit{difference of squares}
\\ \quad \\
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-----------------------------\\\\
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\\\\\\
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7 0

3 years ago

Please help i beg u this is my 4th time asking

4vir4ik [10]

Answer:

Formula to find height when given diameter and slanted height

$\sqrt{s { }^{2} } - r {}^{2}$

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24÷2=12

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3 years ago

GEOMETRY- FIND POLYGON AREA

Dvinal [7]

Answer:

Step-by-step explanation:

The area of a regular polygon is

$A=\frac{1}{2}ap$ where a is the apothem and p is the perimeter. Perimeter is simple: just count the number of sides the polygon has and multiply it by 3 (the length of one side).