The probability that chloe is happy given that she has had dinner by 6pm is 0.9. the probability that chloe is not happy given that she has not had dinner by 6pm is 0.8. assume that there is a 60% chance that chloe eats dinner by 6pm on a given day.
a) if chloe is not happy at 6pm, find the probability that she has not had dinner yet.
b) if chloe is happy at 6pm, find the probability that she has already had dinner.

so, converting firstly the mixed fractions to improper fractions and then "adding".

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step-by-step explanation:

the

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!