Joni sold 376 tickets for the school play. Student tickets cost $4 and adult tickets cost $7. Joni's sales totaled $2080. Which system of equations below will determine then number of adult tickets, a, and the number of student tickets, s, that Joni sold? Your Answers:
1.4s+7a=376
s+a=376
2.4s+7a=2080
s+a=2080
3.4s+7q=2080
s+a =280
4.s+7a=2080
4s+a=376​

< 6 cm to > 26 cm i believe

step-by-step explanation:

351.23

step-by-step explanation:

goog may have it for you

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.