1 A motorboat travels the distance between ports A
and B on a river and returns to
5 h. Find the distance between
2
two ports if the speed of the
boat in calm water is 16.5 km/h
and the current speed is 1.5 km/h

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Explanation:

Because Cactus poke people and they hurt like really bad :3

 There are no cactus spines which are poisonous. The hurt that some spines, such as the cholla, cause are due to barbs on the ends of the spines. The barbs affect more nerve endings in more tissue than a simple spine or thorn would thus causing more pain. Cactus spines do not contain any poison that can kill you upon perforating your skin. However, the thorns are painful and can cause infections that might turn septic, if you don't take care of the problem the right way. It's also possible for spines to leave pustules that could stay on your skin for months. Once you have the needles out, clean the area, apply antibiotic ointment and cover the wound with a bandage, which you should keep clean and dry. If you are in pain, try an over-the-counter analgesic like acetaminophen or ibuprofen.

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