Answer:
To show what to do in case of a nuclear attack.
Explanation:
Every time an explosion went off, he demonstrated what to do by hiding in his shell which is what they wanted everyone to do.
Profit drives people to risk their savings
The 1800's saw scientific inventions and discoveries in farming, medicine and communication. The 1800's did not see any inventions or discoveries regarding space travel. Space travel didn't start until the 1900's.
The inequality which best describe the third side of the triangle which has two sides of unit 20 and 31 is 20>b>31.
<h3>What is triangle inequality theorem?</h3>
Triangle inequality theorem of a triangle says that the sum of the two sides of a triangle is always greater than the third side.
Suppose a, b and c are the three sides of a triangle. Thus, according to this theorem,
(a+b)>c
(b+c)>a
(c+a)>b
The two sides of the triangle are 20 and 31. From the inequality theorem, the another side b can be represented as,
(20+31)>b
Thus, the length of b can be between 20 and 31.
20>b>31
Hence, the inequality which best describe the third side of the triangle which has two sides of unit 20 and 31 is 20>b>31 .
Learn more about the triangle inequality theorem here;
brainly.com/question/309896
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