Find the roots of the equation below 7x2+1=0

The roots of the equation is:

Step-by-step explanation:

Consider the provided equation.

Subtract 1 from both the sides.

Isolate the variable by dividing both the side by 7.

Take the square root:

Now we multiply the numerator and the denominator by √7:

Hence, the roots of the equation is:

if you was gonna solve for a, a is a   < -12

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