Từ các chữ số 0,1,3,5,6,9 có thể lập thành mấy số tự nhiên có 4 chữ số khác sao cho : a) nhỏ hơn 3580
b) chia hết cho 2
c) là số tự nhiên lẻ
d) chia hết cho 9
giải chi tiết (chia ra các trường hợp như bài vd dưới ảnh giúp e )

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

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

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?