Nancy went into the "upside down" for (x) minutes, and Will went into the "upside down" 5/8 more than that. Write an equation that relates the number of minutes Nancy was in the "upside down" (x) with the number of minutes that Will was in the "upside down" (y).

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

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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

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the answer to your question is c.)   volcanoes built the mountains and earthquakes tore them down.

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