Someone pls help Inscribe a right circular cylinder of height h and radius r=7x in a cone of fixed radius R and fixed height H. See the illustration. Express the volume V of the cylinder as a function of x.
[Hint: V=h.  Note also the similar triangles.]
A. V(x)= 49hpix
B. V(x)= 49Hpi/R (R-7x)x^2
C. V(x)= 343Hpi/R x^3
D. V(x)= 49Hpi (1-7x/R)x

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?