3 years ago

Plsssss helpppp!!!!!

Mathematics

1 answer:

Natali5045456 [20]3 years ago

3 0

Answer:

x = 19.42

Step-by-step explanation:

8²+x²=21²

64+x²=441

-64 -64

x²=377

x=19.41648784

rounded is 19.42

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