Which of the following is a rational number?
square root 15 square root 16, square root 21, square root 22

B, the square root of sixteen.

Step-by-step explanation: The square root of sixteen is four, which is an integer- integers are rational numbers.

i think that its the square root of 16.

Step-by-step explanation:

The square root of 16 is 4, which is an integer, and therefore rational.

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this