the steam-and-leaf plot at the right shows the number of stuffed animals Sara and her friends have. how many of Sara's friends have more than 10 stuffed animals?

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

If i have one apple and give you the apple, how many apples do i have?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.