Mr. Richardson has $7,500,000. The tables shows how his investments are distributed. How much does Mr. Richardson have invested, written in scientific notation? A.1.8×10^6
B.1.8×10^7
C.7.5×10^6
D.7.5×10^7

To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

You have 37 coins that are nickels, dimes, and pennies. the total value of the coins is $1.55. there are twice as many pennies as dimes. find the number of each type of coin in the bank.