11,440 views
7 votes
7 votes
7 squared + x squared = 14 squared

User Wisequark
by
3.1k points

2 Answers

19 votes
19 votes

Answer:

12.1 rounded to the nearest tenth.

Explanation:


7^(2) +x^(2) = 14^(2)
7^(2) means 7x7 = 49;
14^(2) means 14x14 = 196

49 +
x^(2) = 196 Subtract 49 from both sides of the equation


x^(2) = 147


\sqrt{x^(2) } =
√(147)

x =
√(147) This would be the exact answer.

12.1 is your answer rounded to the nearest tenth

User Rodolk
by
3.4k points
27 votes
27 votes

Answer:

x = 12.1243557....

Explanation:

14² = 7² + x²

Isolate x.

x² = 14² - 7²

x² = 196 - 49 = 147

√x² = √147

x = √147 = 12.1243557....

User Newspire
by
3.1k points