Which explicit function defines this geometric sequence? 3, 1, 1/3, 1/9, ...

A. f(n) = 1/3 x 2^(n-1)
B. f(n) = 3 x (1/3)^(n-1)
C. f(n) = 1/3 x 3^(n-1)
D. f(n) = 2 x (1/3)^(n-1)

answer: options

step-by-step explanation:

answer: 1475

step-by-step explanation:

becuase you have to know what they are asking you

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!

it has to have an angle of 90 degrees