Let z = e2π i /n. then zn = 1, and z is called an nth root of unity. there are n nth roots of unity, equispaced around the unit circle; they have the form z = e2π i (k/n), where k = 0, 1, 2, , n−1. of course 1 is an nth root of unity, for every n. draw the unit circle for the four 4th roots of unity. the angle difference (in radians) between adjacent 4th roots is correct: your answer is correct. draw the unit circle for the six 6th roots of unity. the angle difference (in radians) between adjacent 6th roots is correct: your answer is correct. draw the unit circle for the eight 8th roots of unity. the angle difference (in radians) between adjacent 8th roots

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98

what i would say the best answer is a. 40.5

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: