During the Lewis and Clark expedition, A. Sacajawea inner child help smooth relations with the American Indians
B. The explorers found a water route from the Atlantic to the Pacific
C. The explorers ignore the natural world and focused on American Indians
D. Many skilled people of the frontier help the smooth relations with American Indians

A. Sacajawea inner child help smooth relations with the American Indians.

Explanation:

Sacajawea

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the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69