Ms sims traveled to 42 countries in 60 days . at this rate, how many countries woyuld she travel to in 40 days

 There are 28 countries that she can travel in 40 days.

Step-by-step explanation:

Since we have given that

Number of countries = 42

Number of days = 60

We need to find the number of countries in 40 days.

Since there is direct variation between number of days and number of countries.

So, our equation becomes,

Hence, There are 28 countries that she can travel in 40 days.

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.