Explanation:
first question: Coal is mainly found in three regions: the Appalachian coal region, the Interior coal region, and the Western coal region (includes the Powder River Basin). The two largest coal mines in the United States are the North Antelope Rochelle and Black Thunder mines in Wyoming.
second question:All of the geothermal plants in the United States are located in the western part of the country, mostly in California or Nevada. California has 91% of the country's steam-powered capacity, and 65% of binary-cycle capacity is found in Nevada.
I think the only one that is not true is that all cells have a nucleus.
Answer:
1: x = -8 . A vertical line will always be in the form "x=". In this case, x is -8.
2: Since the slope is zero for a horizontal line, we can use the slope-intercept form, y = mx + b to write an equation for it. Since m = 0, it becomes y = b.
3: The equation of a vertical line always takes the form x = k, where k is any number and k is also the x-intercept . (link) For instance in the graph below, the vertical line has the equation x = 2 As you can see in the picture below, the line goes straight up and down at x = 2.
4: In a horizontal line the y value remains the same.
In the point ( -4.-6 ) the y value is -6. the point notation is always written as ( x, y).
The y value throughout the line must be -6 so the equation must be
y = -6
Explanation: