<span>x−<span>2/7</span></span>=<span>5/<span>7
so this means x = 1</span></span>
Answer:
128 ÷ 16 = 8
so 8 dog food for every dog

notice |7| 7 is positive, so we can simply remove the bars and use 7 by itself
I believe the correct answer from the choices listed above is the second option. If an oxygen atom has 8 protons and 10 neutrons in its nucleus, then its atomic number would be 8. The atomic number is <span>the number of protons in the nucleus of an atom. Hope this answers the question.</span>