Tickets to the valentines dance cost three dollars per person or five dollars per couple if $475 with the tickets were sold at 180 people attended the dance how many couples were there

step-by-step explanation:

first we must divide the people that attended the dance by 5 how much it would cost for couples to attend.

Which equals;

36- thirty six couples attended the dance.

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.

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25