Carrie and Alex are playing hide and seek Alex stands at the house to count Carrie runs 25 m west and finds nowhere to hide. She Continues 60 m north to the tree

65m

Step-by-step explanation:

Since we are not asked what to find, we can as well calculate the displacement of Carrie.

Displacement will be gotten using Pythagoras theorem;

Given

direction through west x = -25m

direction through north y = 60m

Required

Displacement d

According to the theorem;

d² = x²+y²

d² = (-25)²+(60)²

d² = 625 + 3600

d² = 4225

d = √4225

d = 65 m

Hence the displacement of Carrie is 65m

It's 1,000,000: 

the sum is 1 + 3 + 5 + ... 1999999 

= 1 + 2 + ... + 2000000 - 2*(1 + ... + 1000000) 

= 2000000*2000001/2 - 2*(1000000*1000001 / 2) 

= 1000000*(2000001 - 1000001) = 1000000000000 (one million million) 

and dividing this by one million to get the average, 

you get one million