Complete the chart to find the mean, variance, and standard deviation. Remember to use commas and round numbers to the nearest tenth.
X
Х
X-X
(X-X)?
1. 45
= -357.5
The mean is
2.340
= -62.5
The variance is
3. 400
|=-2.5 =
The standard deviation is
4.825
= 422.5 =
n =
ΣΧ=
X=
EX - x)2 = 310,225.2

stethere all not eveanp-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!

dont't really have enough info here but its likely

sss for the three sides being congruent ( its stands for side side side)

or

sas   for side angle side.   so a side is congruent and and angle and a side