Answer:
1021
Step-by-step explanation:
1+1=2 and it needs to add up to 4 so you add in another 2 in the only place left for it to go which is in the tens place because the first and last number have to be the same and 0 has to go in the hundreds place.
√y
Step-by-step explanation:
The question given is;

This can be written as;

Apply law indices where you divide same base, subtract the powers

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Indices: brainly.com/question/12685658
Keyword : rational exponents,radical expressions,integer
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The arrow goes to the left open circle on 3.
Answer:
~ Well congruent means that all sides and angles are equal, so if sides aren’t congruent it means they are not the same size, angle or sides.