In how many ways can the letters happy be arranged in a row?
a. 50
b. 120
c. 10
d. 25
( explain answer)

S-7< 3 i need answering this problem someone asap answer

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

What is the geometric mean of 3 and 7? a) square root of 21 b) 2 square root of 6 c) 2 square root of 7 d) 21