Mike encounters two traffic lights on his way to school in the morning. On a good day the first light is red with a probability 0.7 and green with a probability 0.3. On a bad day he gets a red or green light with equal probabilities. The probability of being stopped by a red light at the second traffic light is the same as the probability at the first light. With a probability 0.6, he will have a good day, and with a probability 0.4 he will have a bad day. (a) What is the probability that Mike will drive to school without having to stop at a traffic light

ou would have 12 of each

well we know there are 4 clubs in 52 cards so it’s replaced so it should be 3/51

step-by-step explanation:

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!