Answer:
Step-by-step explanation:
divide by 3: x^2 = 4
Think you can finish that off now?
Answer:
29.5
Step-by-step explanation:

Answer:
Since opposite sides of parallelogram are equal therefore
9r-6=8r+3
r=9
EF=4r+19{opposite sides of parallelogram are equal}
=4×9+19
36+19
=55
Here is you answer.
Step-by-step explanation:
Answer:
we cant just tell that. we need numbers. and problems.
Step-by-step explanation:
Answer:
the atoms can have different numbers of valence electrons