Y= -1.4x - 1 what is the x intercept?

Let's solve for x

y=-1.4x-1

Flip the equation

-1.4x-1=y

Add 1 to both sides

-1.4x-1+1=y+1

-1.4x=y+1

Divide both sides by -1.4

-1.4/-1.4=y+1/-1.4

x=-0.714286y-0.714286

I hope that's help !

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