If we take 78 as the 100%, what's 11 of it?
well
solve for "x"
U can use the cosine or sine rules depending on the question/triangle
Commutative Property means you can switch the numbers and get the same answer.
Answer:
the third one
Step-by-step explanation:
first you would multiply the mass and the "amu" of both of the isotopes of copper when you have what you multiplyed, you add that product and get your answer.