$\bf \begin{cases} -2x+y=0\\ \boxed{y} = 2x\\[-0.5em] \hrulefill\\ 5x+3y=-11 \end{cases}\qquad \qquad \implies \stackrel{\textit{substituting on the 2nd equation}}{5x+3\left( \boxed{2x} \right)=-11} \\\\\\ 5x+6x=-11\implies 11x=-11\implies x = \cfrac{-11}{11}\implies \blacktriangleright x = -1 \blacktriangleleft \\\\\\ \stackrel{\textit{we know that}}{y = 2x}\implies \blacktriangleright y = -2 \blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ ~\hfill (-1~~,~~-2)~\hfill$

7 0

3 years ago

The bases of a trapezoid are 16.8 yards and 6.9 yards. What is the average of the two bases? 23.7 yd 4.95 yd 9.9 yd 11.85 yd

marusya05 [52]

Answer:

11.85 yards

Step-by-step explanation:

16.8 + 6.9 = 23.7

23.7 / 2 = 11.85

6 0

3 years ago

CAN U PLZ HELP THANK YOU

Ulleksa [173]

Answer

second one

Step-by-step explanation:

3 0

3 years ago

Which tells the time it will be in 30 minutes? *The time is 12:30*

Which tells the time it will be in 30 minutes? The time is 12:30