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Elina [12.6K]
2 years ago
14

Help me? Show work so I can understand please and thank you!

Mathematics
2 answers:
charle [14.2K]2 years ago
7 0
29^2 - 20^2
841-200=641
Answer: 25.31
Vikentia [17]2 years ago
3 0

I think this is correct, Answer is <em><u>21</u></em>

Step-by-step explanation:

Step 1: Write down formula:                               a^2+b^2+c^2                  

Step 2: Plug in b and c value in formula:          a^2+20^2=29^2  

Step 3: Solve the exponents:                            a^2+400=841

Step 4: Subtract 400 from both sides:                   -400  -400

                                                                                     a^2=441

Step 5: Square root both sides:                                \sqrt{a^2}=\sqrt{441}

                                                                                     a=21

Step 6: 29+21:                    50

Step 7: 50-29:                     <u>21</u>

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