geometry
Image??
so just use the Pythagorean theorem - do you know it ?
i know it but i don't understand it
hypotenuse squared = side squared + side squared
in this case 20^2 = 15^2 +x^2 find the x value
can you calcule the x ?
give me minute I slow
20^2 = ?
20*20 = ?
bruh chill 400
ok 15*15 = ?
225
ok 400 = 225 +x^2 subtract from both sides 225 so what will get ?
400-225 = 225-225 +x^2
make the calcules pls
400-225 = ?
175
yes 225-225 = ?
0
ok 175 = x^2 how you find x ?
make square root from both sides x = sqrt175 do you can simplifie it ? x = ?
x = sqrt175 x = sqrt(25*7) x = sqrt(5^2 *7) x = ?
5^2 how come out from square root ?
bruh chill the freak out I have to write this stuff in my notebook
sqrt(5^2) = 5
ok ?
\(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9 x = sqrt175 x = sqrt(25*7) x = sqrt(5^2 *7) x = ? \(\color{#0cbb34}{\text{End of Quote}}\) in this way x = 5sqrt7
hope you understand it
bro f off slow down
hnd cya
@jhonyy9 i only unblocked you because i need help understanding wat you said plus you need to chill and actually explain things in better detail
ok ask me
@supie can you please explain here - is to late for me
x = sqrt175 x = sqrt(25*7) x = sqrt(5^2 *7) x = 5sqrt7 explain that what is that?
you can write the 175 like 25*7 yes ?
yea
and 25 = 5^2
uh huh
25 = 5*5 = 5^2
and sqrt5^2 = 5
@Laylalyssa please can you come explain - i gtg
@aZ
Jhonyy did an excellent job so far :) And please be nice to him, he's doing his best to help you :)) But I see that you're confused about the last step So we have \(\sqrt{175} \) As you noted earlier, 175 = 25 * 7 and another way to write 25 is 5^2 So we get \(\sqrt{175} = \sqrt{25 \times 7} = \sqrt{5^2 \times 7} \) Does that make sense so far?
yee
so now you need to know one rule \(\sqrt{a\times b} = \sqrt{a} \times \sqrt{b}\) still following along?
uh huh
So then we have \(\sqrt{25\times 7} = \sqrt{25}\times\sqrt{7}\) Do you know what the square root of 25 is? Basically, what number multiplied by itself will give you 25?
5
Exactly and so now we get \(\sqrt{25} \times \sqrt{7} = 5\times \sqrt{7} = \boxed{5\sqrt{7}}\)
and that's it? or is there more?
That's all!
You can use a calculator to multiply 5 and sqrt(7) so you can get an answer as a decimal But it all depends on how they want your answer. \( 5\sqrt{7}\) is the most precise answer
oh ok thank you are you gonna be on here much longer? cuz I need help with more questions
I have to get off for now- have a lot of studying to catch up on. But I'll be back later maybe :)
it says it is not correct
What was the answer that you submitted?
\[5\sqrt{7}\]
In that box, are you able to write \(\sqrt{7}\)
Oh your question says round to the nearest tenth
yes
Plug in 5sqrt(7) into a calculator and you'll get 13.229 What is that rounded to the nearest tenth?
oh oof
13.2
And that's your answer!
wow thx for the help
No problem! Jhonyy did all the hard work :)
i have 15 more questions
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