The answer is D
U would subtract a^2 then square both sides to isolate the variable
Answer:
7 21 35 49
3 9 18 27
Step-by-step explanation:
the top is going up by 14 and you subtract 9 from 27
We can use the ratios for special triangles (see the attachment below). We'll be using the 45-45-90 triangle. We notice that side BC is equal to

, and side AC (x using the special right triangle) is equal to 16. We can therefore say that side BC is equal to

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:)
Your answer would be D.
Make this the brainliest answer if it helped!