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07.10.2020 •
Mathematics
At 1:30 Marlon left his house to go to the beach, a distance of 7.2 miles. He rode his skateboard until 2:15, then walked the rest of the way. He arrived at the beach at 3:00. Marlon’s speed on his skateboard is 2 times his walking speed. Find his speed when walking and when skateboarding.
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Ответ:
X + 20 <= -10
Subtract 20 from both sides:
X <= -30