dctjr
18.07.2019 •
Mathematics
Virginia's painting service charges $10 per job and $0.20 per square foot. if virginia earned $50 for painting one job, how many square feet did she paint at the job?
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Ответ:
so we have all we need for finding x (# of square feet):
10 + 0.20x = 50
Solving for x:
0.20x = 50 - 10
0.20x = 40
x = 40/0.20
x = 200 square feet
Ответ:
It's a continuous process.
Explanation:
Conduction directly affects air temperature only a few centimeters into the atmosphere. During the day, sunlight heats the ground, which in turn heats the air directly above it via conduction. At night, the ground cools and the heat flows from the warmer air directly above to the cooler ground via conduction.