Given that 3^x = 9^y-1 show that X = 2y-2

Step-by-step explanation:

3^x =3^2(y-1)

I changed 9 to 3^2.

3^x = 3^2y-2

Drop 3 both sides.

x=2y-1

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

the diver is 33 feet below the surface.

step-by-step explanation:

hope this