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Find c if a = 7 and b = 9.
Right triangle with sides a, b, and c. Side c is opposite the right angle.
A. c = 16
B. c = 4
C. c = 3 times the square root of 7
D. c = the square root of130
 one year ago
 one year ago
Find c if a = 7 and b = 9. Right triangle with sides a, b, and c. Side c is opposite the right angle. A. c = 16 B. c = 4 C. c = 3 times the square root of 7 D. c = the square root of130
 one year ago
 one year ago

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RandomFriendBest ResponseYou've already chosen the best response.2
Use the pythagoreon theroem!
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Did you? What's up? Let's Math.
 one year ago

somebodys_heartbrakeBest ResponseYou've already chosen the best response.1
um like this A^2 +B^2= C^2
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
You got it. You are given A and B. Let's do it. 7^2 + 9^2 = C^2.
 one year ago

AzteckBest ResponseYou've already chosen the best response.1
@somebodys_heartbrake that's exactly the same question as the previous one except this one has different values. And now you don't know square roots and squaring which should of been taught in primary/elementary school.
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Sweet whats 49+81?
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Alright so far we know that 130 = C^2. What's C???
 one year ago

AravindGBest ResponseYou've already chosen the best response.0
@Azteck you are right infact i had replied in previos question and when i saw this i thought my reply got deleted :O .
 one year ago

AzteckBest ResponseYou've already chosen the best response.1
I think it's a different question, but then it's just using the same format as the previous one.
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Alright so far we know that C^2 = 130. Let's find C. Do you know how to find square roots, or are you a little bit rusty?
 one year ago

somebodys_heartbrakeBest ResponseYou've already chosen the best response.1
idk sorry
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Do you know the square root of say 9? Or do you know nothing about square roots? I don't care either way so just be honest
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
haha alright :) Let's learn some square roots then. I'm not a math teacher but i'll try my best.
 one year ago

somebodys_heartbrakeBest ResponseYou've already chosen the best response.1
ok thanks for helping btw
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
So basically a square root is " What number multiplied by itself will give me this number"
 one year ago

AravindGBest ResponseYou've already chosen the best response.0
@RandomFriend i appreciate your effort to help the asker get to the answer ..make sure you do not spoonfeed anyone in the process ,happy studying! :)
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
@AravindG Thanks! Happy internet moderating.
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Anyway another way to look at square roots is "What number SQUARED, equals this number?" So lets look at \[\sqrt{4}\] . 2 squared . Aka 2*2 = 4
 one year ago

somebodys_heartbrakeBest ResponseYou've already chosen the best response.1
wouldnt it be 3 to the first 1 u asked
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Yeah exactly. 3*3 = 9. So the square root of 9 is three.
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Alright it works with letters or "variables" too. What's the square root of \[\sqrt{x^2}\] ?
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Nice. X*X = X^2. How about something that applies to us. What is the \[\sqrt{C^2}\]
 one year ago

AravindGBest ResponseYou've already chosen the best response.0
well done @somebodys_heartbrake and @RandomFriend :)
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Nailed it. So we left off at \[C^2 = 130\]. What happens if we take the square root of both sides?
 one year ago

somebodys_heartbrakeBest ResponseYou've already chosen the best response.1
um not sure
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Write it out for me. Put a square root symbol around both sides.
 one year ago

somebodys_heartbrakeBest ResponseYou've already chosen the best response.1
idk how to do that
 one year ago

AravindGBest ResponseYou've already chosen the best response.0
......................
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Alright so we are just going to draw a square root sign around both sides. You can do it. I'll do it first. \[\sqrt{C^2} = \sqrt{130}\]
 one year ago

AravindGBest ResponseYou've already chosen the best response.0
@somebodys_heartbrake please make a thorough reading on this tutorial http://www.mathsisfun.com/squareroot.html
 one year ago

AzteckBest ResponseYou've already chosen the best response.1
@somebodys_heartbrake wants to know how to write a square root sign like what @RandomFriend did above. I don't think @somebodys_heartbrake knows how to use the equation editor.
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
I dont care if you don't know how to use the equation thing. As long as you get it. Do you see how i got my equation above?
 one year ago

RandomFriendBest ResponseYou've already chosen the best response.2
Alright I'ma move on. from here \[\sqrt{C^2} = C. \]. This givese us C = sqrt(130). Which was one of our answers I believe.
 one year ago
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