Why is 10^5/10^4 equal to 10^11? Explain or show your thinking

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

What is the solution to the inequality? 6x−5> −29, a x> −4 bx> 4 cx< 4 dx< −4

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?