North Carolina has 9 hydroelectric power plants. There are a total of 45 power plants throughout the entire state. What percentage of the total number of power plants in North Carolina are hydroelectric power plants?

If square root x = -7, then x= -49 true or false

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Guys i need ! graded assignment grade 8 checkpoint 2, part 2 answer the questions below. when you are finished, submit this assignment to your teacher by the due date for full credit. total score: of 9 points (score for question 1: of 4 points) 1. the cost of renting a car for a day is $0.50 per mile plus a $15 flat fee. (a) write an equation to represent this relationship. let x be the number of miles driven and y be the total cost for the day. (b) what does the graph of this equation form on a coordinate plane? explain. (c) what is the slope and the y-intercept of the graph of the relationship? explain.