Help me with the step to this please I am trying to teach my daughter and I am completely lost!

x ≈ 76.5 ft

Step-by-step explanation:

Assuming this is a right triangle, then

Using the sine ratio

sin40° = =

Multiply both sides by 119

119 × sin40° = x, thus

x ≈ 76.5 ft ( to the nearest tenth )

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.

16

step-by-step explanation: