During a snowstorm, the temperature drops from 0°F to -18°F in 6
hours. On average, by how many degrees is the temperature changing
per hour?

on average the temperature is changing -3 degrees per hour

Step-by-step explanation:

You would use -18 because that’s the temperature and the time which was 6hours and divide them by each other because you’re trying to find out how much the temperature would drop per hour so -18/6=-3

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x