Answer:
a. True. Rational numbers are closed under the sum operation, therefore, the sum of two rational numbers is always a rational number.
b. True. irrational numbers are closed under the sum operation, therefore, the sum of two irrationals numbers is always a irrational number.
c. True. The square of a real number is always a number greater than zero, and the sum of two numbers greater than zero is greater than zero.
d. True. The real numbers are closed under the product operation, then if a and b are reals numbers, the product ab is also a real number.
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Answer:
I think the answer is
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(D) OR (B)
The question is an illustration of scale drawing
The character have to travel 8.5 km in the game to visit all three destinations and return to their starting point
<h3>How to calculate the actual distance</h3>
The distance on the map are given as:
A =2 cm
B = 8 cm
C = 7 cm
The total distance on the map would be:


The actual distance between the store and the dungeon is 4 kilometers.
This means that:

So, we have:


Represent the required actual distance with x.
So, we have:

Express as fraction

Multiply both sides by 17


Hence, the actual distance travelled is 8.5 km
Read more about scale drawing at:
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Answer:
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Answer:
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