In a study of 250 adults, the average heart rate was 70 beats per minute. assume the population of heart rates is known to be approximately normal, with a standard deviation of 12 beats per minute. what does a margin of error of 2 for the 98% confidence interval of the average beats per minute mean? in a study of 250 adults, the average heart rate was 70 beats per minute. assume the population of heart rates is known to be approximately normal, with a standard deviation of 12 beats per minute. what does a margin of error of 2 for the 98% confidence interval of the average beats per minute mean?

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

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!

answer: 12x^2+6x

step-by-step explanation:

6x does not equal 24x. hope it works!