The Milky Way is 10^5 light years in diameter and 10^4 light years in thickness. One light year is equivalent to 5.88 x 10^12 miles. What is the diameter and thickness of the milky in miles?

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

How to do this , and can some one explain

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)