Discover Questions

What is 7/20 divided by 5/6 I need to reduce my problem to the lowest amount? Solve the laplace transform y"- 2y '+ y = e^-t , y(0)=0, y'(0)=1? Are we completely surrounded by other galaxies both above and below the plane of our milky way galaxy? or are they mostly above us? If you weigh out 2.105 grams of sand / salt mixture and end up with 1.095 grams of dry sad what is the percent of sand in their original mix? I need help with 2 unusual factoring problems. Problem 1: 4x^4+32x^3+47x^2-8x-12
Problem 2: x^6 - x^4 - x^2 + 1?