What is the value of x?
i got two different answers of 69.44 and 70.713 so i don't know how to solve this.

It took me a minute, but I understand what it wants you to do.

a^2+b^2=c^2

Find the missing length on that one triangle to the left.

62^2+b^2= 99.2^2

Square the numbers. 

3844+b^2= 9840.64

Subtract 3844 on both sides. 

b^2= 5996.64 

Square root it. 

b= 77. 437975 round down to b= 77.4 

Now, we can find the length of the other missing side. (x+2)

77.4^2+b^2= 112^2

5990.76+b^2= 12,544

Subtract 5990.76 on both sides. 

b^2= 6553.24

Square root it. 

b= 80.952085, round to b=81

Now, plug that in. 

(x+2)= 81

Subtract 2 on both sides. 

x=79 (about)

I hope this helps! Make sure to check my work. 
~kaikers

Definitely