Resuelve por el método de suma y resta, por el método de sustitución y por el método de igualación (realiza el procedimiento de cada método) el siguiente
problema:
La suma de dos números es igual a 17 y su diferencia es igual a 1.
x + y = 17
x – y = 1

POR FAVOR AYUDA ES PARA HOY A MAS TARDAR LAS 5:00 p. m.

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

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