In heather's physics class, she had to solve the equation 7=12at2+ut for u. which equation correctly solves for u?

B (7 -1/2 at^2)/t = u

Step-by-step explanation:

7 = 1/2 at^2 + ut

subtract 1/2 at^2 from each side

7 -1/2 at^2 =  1/2 at^2 + ut - 1/2 at^2

7 -1/2 at^2 = ut

divide by t

(7 -1/2 at^2)/t = ut/t

(7 -1/2 at^2)/t = u

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.