Question

What is the value of x? Round your answer to the nearest tenth if necessary. http://prntscr.com/aomlhh

Answer 1

Use the Pythagorean theorem I believe.

a^2 + b^2 = c^2

7 is leg a.
4 is leg b.

You can just plug them in and solve ^~^

Answer 2

^^

Answer 3

\[a^2+b^2=c^2\]

Answer 4

^ That.

Answer 5

ok so 7 ^2 + 4 ^2 = c^2

Answer 6

Yes.

Answer 7

Do you know the next step? ^~^

Answer 8

no i dont can you explain

Answer 9

Okay. so 7^2 + 4^2 = c^2 is the same as
49 + 16 = c^2
Then 49 + 16 = 65.

so 65 = c^2.

Then to get rid of the power on c, you have to do the square root of 65.

Answer 10

would you divide 65 by 2

Answer 11

\[65 = c ^{2}\]

\[\sqrt{65}\]

\[\sqrt{65} = 8.0622577\]

Answer 12

(Not sure why that got deleted sorry)

So then you round 8.0622577 to the nearest tenth giving you 8.1

Answer 13

So ultimately x = 8.1

Answer 14

oh ok that make sece can you help me throguth another