$\left\{\begin{array}{ccc}y=2x-5\\y=2x+7&&\text{multiply both sides by (-1)}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}y=2x-5\\-y=-2x-7\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad0=-12\qquad\text{FALSE}\\\\Answer:\ \boxed{NO\ SOLUTION}$

6 0

2 years ago

Represent the following situations as positive or negative integers.

Rama09 [41]

Answer:

1)+5

2)-6

3)+15

4)-4

I hope they are all right :)

Step-by-step explanation:

6 0

3 years ago

How do you write 78,621,087 in expanded notation and expanded form?

Inga [223]

70,000,000+8,000,000+600,000+20,000+1,000+80+7 = 78,621,087

4 0

3 years ago