A mountain path is 12.1 miles long. If a hiker walks along the path at a rate of 1.96 miles per hour, in approximate how many hours will the hiker walks the entire trail ?

6.2 hours

Step-by-step explanation:

d=rt  where d is distance, r = rate and t - time

12.1 = 1.96t

Divide each side by 1.96

12.1/1.96 = 1.96t/1.96

6.17346 = t

6.2 hours

Step-by-step explanation: I divided 12.1 by 1.96

answer: the first one

step-by-step explanation: use a calculator and divide the minutes by the dollars.

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.