For which of the following situations would the order that items are chosen not matter? Finding the number of ways to choose a carrot and broccoli out of 10 vegetables. Finding the number of ways to choose Al, Bob, and Carl out of a class of 30 students. Finding the number of ways to choose 2 vegetables out of 10. Finding the number of ways to choose 3 students out of a class of 30. Finding the number of ways to choose 4 letters out of 12.

Finding the number of ways to choose 4 letters out of 12

Step-by-step explanation:

The two situations above didn’t even mention letters. One situation mentioned carrot and broccoli out of 10 vegetables. The other situation mentioned Al, Bob and Carl out of a class of 30 students.

The number of letters (4) out of total letters (10) doesn’t matter because it wasn’t one of the two previously mentioned situations.

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.

answer:

a=9

step-by-step explanation: lmk if you need a explanation