Question

P varies directly as A and inversely as the square of N
a=2,N=9,P=7

Answer 1

hi harry potter =P

Answer 2

I have it down to 7 =k2/81

Answer 3

do I times 7 by 81?

Answer 4

i think something is wrong

Answer 5

possible answers are:
A.
567/
2
B.
63/
2
C.
21/
2
D.
14/
81

Answer 6

wouldn't my formula be p=KA/N^2

Answer 7

567/2 is 283.5 not 284

Answer 8

ohh i got it. it would be 567/2 !

Answer 9

There is one "directly" variable, A
There is one "inversely" variable, N²

Substituting
A
P = k·----
N²

Substituting the complete set of data,
where ALL the variables are given:

P=7, N=9, A=2


2
7 = k·----
9²

Solve for k

2
7 = k·---
81


7*81 = k·2

567 = 2k

k=567/2

Answer 10

Sorry my bad

Answer 11

lol checking your work made me get it. thank you! =)

Answer 12

Anytime.