Answer:
The 1,3,and 4.
Step-by-step explanation:
Answer: 18
Step-by-step explanation:
Square root of 81 is 9 because 9*9=81 then 9*2=18
Answer:
(3, 1)
Step-by-step explanation:
Let the coordinates of B be (x, y)
Since, M is the midpoint of AB.
Therefore, by mid point formula:

B. <span>70 percent hydrogen, 28 percent helium, 2 percent other elements</span>