Answer:
6
Step-by-step explanation:
It would be 6 because on a square, all the sides have to be the same length. The length of the square is equal to the base of the parallelogram.
You need to represent it as 2x + 10 = 50
6
Like how

= 36
Square root does the opposite.
Edit: my mistake, it is 6
Answer:
9
Step-by-step explanation:
n(A)+n(B) [n(A)=cardinal numbers of set A.so we have to count the elements and write .
=4+5
=9