En su luna de miel james joule puso aprueba la conversion de energia mecanica en energia interna al medir temperaturas de cascadas de agua. Si el agua en lo alto de una cascada suiza tenia una temperatura de 10.0°C y despues caía 50.0m ¿que temperatura maxima en el fondo podria esperar joule? No tuvo exito para medir el cambio de temperatura, en parte porque la evaporación enfriaba el agua que caía y tambien porque su termometro no era suficientemente sensible

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- 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. 3- 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 part b?