Answer:
The atomic mass
Step-by-step explanation:
The decimal at the bottom of an element represents how much one atom of that element weighs.
Answer:
y=-0.215x^2+35
Step by Step:
Let,
,
,
, 
We know that, the general equation of the parabola.


Substitute the value of
in equation
and find the value of 







Hence, the equation of the parabola is:

Answer:
m∠ADB = 59°
Step-by-step explanation:
I've provided my work which also includes how I check my answers by using the information given! Hope this helps!!! If you have any questions, I can try to help.
Answer:
B and C
Step-by-step explanation:
They are on the same line so they ad up to 180 and are supplementary