Answer:
1219253925
Step-by-step explanation:
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Answer:
B.
Step-by-step explanation:
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A. X is a variable, not a number on the coordinate plane.
Answer:
D. 8.8
Step-by-step explanation:
As the pythagorean theorem.
A² + B² = C²,
5.4 × 5.4 + 7 × 7 = C²,
29.16 + 49 = C²,
78.16 = C²,
8.8 ≈ C