recent random survey of 1,000 Americans asked them what they would do with an unexpected tax return. 470 of them indicated they would use it to pay down debt. Calculate a 90% confidence interval for the proportion of all people who would use an unexpected tax refund to pay debt. 1. Calculate p-tilde, the initial estimate for the proportion of people who would pay down debt. Use five decimals for accuracy. 470/1000=0.47000 (471)/(1002)=0.47006 (472)/(1004)=0.47012

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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.

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step-by-step explanation:

answer is b

step-by-step explanation: