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I dont even know where to start... Thanks

 Jun 25, 2017

Best Answer 

 #1
avatar+7352 
+2

According to the Pythagorean theorem,

 

a2 + b2  =  c2     , where  " c "  is the hypotenuse of a right triangle, and  " a "  and  " b "  are its legs.

 

They tell us that   b = √77   and   c = 12  . Plug these values in for  b  and  c  .

 

a2 + √772  =  122              This is...

 

a2 + 77  =  144                  Subtract  77  from both sides of the equation.

 

a2  =  67                            Take the positive square root of both sides.

 

a  =  √67

 

a  ≈  8.19

 Jun 25, 2017
 #1
avatar+7352 
+2
Best Answer

According to the Pythagorean theorem,

 

a2 + b2  =  c2     , where  " c "  is the hypotenuse of a right triangle, and  " a "  and  " b "  are its legs.

 

They tell us that   b = √77   and   c = 12  . Plug these values in for  b  and  c  .

 

a2 + √772  =  122              This is...

 

a2 + 77  =  144                  Subtract  77  from both sides of the equation.

 

a2  =  67                            Take the positive square root of both sides.

 

a  =  √67

 

a  ≈  8.19

hectictar Jun 25, 2017
 #2
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+1

Thank you!

Guest Jun 25, 2017

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