Answer:
It look right to me
Step-by-step explanation:
Answer. No , we can say that all parallelograms are similar , because if we consider a rectangle and a square side by side , they are not similar to each other , we can take rhombus and square as another example . There are many types of parallelograms , with have something uncommon among themselves
(4.2*105)+(5.3*10^5)
441 + 530000
530441
-----------
If your problem is (4.2*10^5)+(5.3*10^5), it would be
420000 + 530000
950000