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skad [1K]
3 years ago
13

I need help with this algebra question

Mathematics
2 answers:
ioda3 years ago
7 0

Answer:

4.58258

Step-by-step explanation:

Pythagorean Theorem:

a² + b² = c²

Input:

2² + x² = 5²

Remember, c² is always the side opposite of the right angle...

4 + x² = 25

21 = x²

x = 4.58258

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

dybincka [34]3 years ago
3 0

Answer:

\sqrt{21}

Step-by-step explanation:

let the missing side be x , then

Using Pythagoras' identity in the right triangle.

x² + 2² = 5²

x² + 4 = 25 ( subtract 4 from both sides )

x² = 21 ( take the square root of both sides )

x = \sqrt{21} ≈ 4.6 ( to 1 dec. place )

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