En un sistema de ecuaciones lineales de \( 2 \times 2 \), el conjunto solución son los puntos que satisfacen ambas ecuaciones. Si el conjunto de puntos es infinito, se dice que el sistema de ecuaciones lineales es compatible indeterminado. En base a la información anterior, la ecuación que forma un sistema de ecuaciones compatible indeterminado con \( \quad 5(x+y)=3(2 x-6 y+2) \) es A. \( \quad-x+23 y+6=0 \) B. \( \quad-x+23 y-6=0 \) C. \( \quad x+23 y-6=0 \) D. \( -x-23 y-6=0 \)

Why is there a decreasing number of organisms in each feeding level of the ecosystem? A. Because there is an increase in the amount of energy present at each progressive level, there is a decreasing number of organisms at each feeding level. B. Because there is less energy available at each feeding level, there is a limit to how many organisms can be a part of each progressive level. C. Because there is an increase in the amount of energy consumed by the organisms at each progressive level, there is a decreasing number of organisms at each feeding level.

JFiangles In the figure, \( A C=A E, A B=A D \) and \( \angle B+B_{0} \) \( =\angle E A C \) prove that \( B C=D E \) in the given \( \triangle A B C \) is \( a \)

In un quadrato tutti i lati sono \( \quad \) alla somma degli altri due; quindi, un quadrato: \( \begin{array}{l}\text { è } \\ \text { è sempre inscrittibile }\end{array} \) non è mai inscrittibile è inscrittibile solo in particolari condizioni

2. Solve \( x^{\wedge} 2+2 x-8=0 \), by factoring.

Use a coterminal angle to find the exact value of the following expression. Do not use a calculator. \( \sin \left(780^{\circ}\right) \) The coterminal angle is \( \square^{\circ} \). (Type your answer in degrees. Use angle measures greater than or equal to 0 and less than 360 .)