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Use the Pythagorean theorem to find b .

Anyone able to help me?

 Mar 12, 2015

Best Answer 

 #2
avatar+27 
+5

Pythagorean Thereom

so lets say 12=a and 13=c well then uaing the Pythagorean Thereom which is int his case a^2+b^2=c^2

so if with plug in our numbers 12^2+b^2=13^2 so we simplify 144+b^2=169 so we get rid of 144 from both sides to get rid of that 144 b^2=25 and we take the sqrt() of each side or square root because that is the oposite of exponents and we get b= sqrt(25) and the sqrt(25) is 5 so b=5 so it is 5

 Mar 12, 2015
 #1
avatar
+5

The Pythagorean Theorem is as follows:

 

a²(first side) + b²(second side) = c²(hypotenuse)

So, if you're looking for b, then we can put a = 12 & c = 13

12² + b² = 13²   <=> b² = 13² - 12² = 25

Now take the primary square root of b², you get the square root of 25, which is 5.

 Mar 12, 2015
 #2
avatar+27 
+5
Best Answer

Pythagorean Thereom

so lets say 12=a and 13=c well then uaing the Pythagorean Thereom which is int his case a^2+b^2=c^2

so if with plug in our numbers 12^2+b^2=13^2 so we simplify 144+b^2=169 so we get rid of 144 from both sides to get rid of that 144 b^2=25 and we take the sqrt() of each side or square root because that is the oposite of exponents and we get b= sqrt(25) and the sqrt(25) is 5 so b=5 so it is 5

buecrab2 Mar 12, 2015

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