$\underline{+\left\{\begin{array}{ccc}2x+y=1\\3x-y=-6\end{array}\right}\ \ \ \ |\text{add both sides of equations}\\.\ \ \ \ \ 5x=-5\ \ \ \ |:5\\.\ \ \ \ \ \ x=-1\\\\\text{put the value of x to the first equation}\\\\2(-1)+y=1\\-2+y=1\ \ \ |+2\\y=3\\\\\text{Answer:}\ (-1,\ 3)$

5 0

4 years ago

4. What is the value of the expression 72 + (33 + 12) 23 a. 3 b. 8 C. 9 d. 11

jeyben [28]

Answer:

1107

Step-by-step explanation:

72+ (33+12)23

= 72 + (45)23

=72+ 1035

=1107

6 0

3 years ago

Jordan found 6×8 by breaking apart the six into 5+ one which of the following correctly shows the next step in finding the resul

Oduvanchick [21]

Can u take a pic to see in what u need help

8 0

3 years ago