If you flipped the coin 10 times, how many times do you think it would land on heads?

Can someone me with this problem . show your work .

Which expression is rational? 6. , square root two, square root 14, square root 49

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?