It’s 136 because...
68+68= 136
No, 2 x 7 is 14 which is even.
This is an isosceles triangle, so both legs are of length 5√2.
Use the Pyth. Thm. to find the length of the hypotenuse. Square 5√2 and double the result: 25(2) = 50; twice 50 is 100. The square of the length of the hyp. is 100, and so the length of the hyp is sqrt(100), or 10 (answer).
Subtract 7 from 19 then divide the result by 3
19-7=3w
12=3w
12/3=w
4=w
W is 4