Answer:
A rational number is normally number that can be expressed in the form of p/q where q ≠ 0. But, cannot be expressed in the form of p/q. So. this means that
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Answer:
2/3
Step-by-step explanation:
I assume the 2 after the j is a square. So, we bring the 21 to the other side by subtracting it from both sides, getting 144j^2=64. Now we divide to get 64/144 = j^2. Make sure NOT to simplify it, it's perfect right now. The square root of that is , or 8/12, which we can now simplify to 2/3. Hope this helps!