Simplify the expression, if possible. If the expression is already in simplified form, enter the given expression7x^3-x^2/2x^3

it depends on the original question. here are 2 ways to solve depends on the question

7x³ - x²/2x³

7x³ - 1/2x

but if the problem is

(7x³-x²)/(2x³)

[x²(7x-1)]/(2x³)

(7x-1) / (2x)

step-by-step explanation:

b and c

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