Answer:
C.
Step-by-step explanation:
The eqn. of a circle with centre (h,k)and radius ris given by,
It will have 15 protons because the atomic number will always equal the number of protons and vice versa
Answer:
Step-by-step explanation:
cos theta is 2/3 because cos means reciprocal of sec
Answer:
170929
Step-by-step explanation: