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ElenaW [278]
1 year ago
10

Sistema de ecuaciones.5x+2y=-152x-2y=-6

Mathematics
1 answer:
Zolol [24]1 year ago
7 0

Tnemos el sisema de ecuaciones:

\begin{gathered} 5x+2y=-15 \\ 2x-2y=-6 \end{gathered}

Podemos resolverlo por eliminación sumando ambas ecuaciones y eliminando y. Asi podemos resolver para x:

\begin{gathered} (5x+2y)+(2x-2y)=(-15)+(-6) \\ 7x+0y=-21 \\ x=-\frac{21}{7} \\ x=-3 \end{gathered}

Ahora podemos resolver para y con cualquiera de las dos ecuaciones:

\begin{gathered} 2x-2y=-6 \\ 2\cdot(-3)-2y=-6 \\ -6-2y=-6 \\ -2y=-6+6 \\ -2y=0 \\ y=0 \end{gathered}

Respuesta: x=-3, y=0

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<h3>What is the correct statement?</h3>

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Please find attached the complete question. To learn more about box plots, please check: brainly.com/question/27215146

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4 0
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abruzzese [7]

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Step-by-step explanation:

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The t-statistic is:

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The two-sided P-value for t=1.67 is P=0.11132.

This P-value is bigger than the significance level, so the effect is not significant. The null hypothesis can not be rejected.

There is no convincing evidence at α = 0.10 level that the average vertical jump of students at this school differs from 15 inches.

7 0
3 years ago
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Marat540 [252]

Answer: $12 for one ticket.

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2 years ago
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3 years ago
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