Autopilot aviation sells model airplanes for $125. dale loves to build model airplanes, and knows the store is offering a sell today. when he gets to the store, there are no sale signs. however, his model airplane rings up for $97.75. what percent off the original price did dale receive?

Step-by-step explanation:

125x = 97.75

x = 0.782

1 - 0.782 = 0.218

21.8% off the original price

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

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.