The brain volumes (cm^(3)) of 50 brains vary from a low of 908 cm^(3) to a high of 1498 cm^(3). Use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 185.9 cm^(3), assuming the estimate is accurate if it is within 15 cm^(3).

The estimated standard deviation is __cm^(3).

-1, -2, -3, -4, -6

step-by-step explanation:

40% off the regular price is the correct answer.

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!

if im not mistaking its

step-by-step explanation: