What is the slope of a line parallel to: y + 2x = 20?

Identify the type of chemical reaction involved in each action.

What type of coastline is commonly found along the western side of the america’s

Why is the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed