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iren2701 [21]
2 years ago
11

Find the value of x. Round your answer to the nearest tenth. (One number after the decimal.)

Mathematics
2 answers:
nadya68 [22]2 years ago
5 0

Answer:

x = ~8.9

Step-by-step explanation:

a^2 + b^2 = c^2

c is the long side

a and b are the other two shorter sides

this means

x^2 + 19^2 = 21^2

x^2 + 361 = 441

x^2 = 441- 361

x^2 = 441- 361

x^2 = 80

square root of 80 = ~8.9

x = ~8.9

Artist 52 [7]2 years ago
3 0

Answer:

8.9

Step-by-step explanation:

4\sqrt{5}=8.9444

rounded = 8.9

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