Escribe falso o verdadero justifique su respuestas
a. el producto entre dos o mas numeros enteros de igual signo es negativo
b. el producto de dos enteros de diferente signo es negativo
c. el producto de cuatro enteros siempre es positivo
d. el producto de todo numero entero por cero da como resultado el mismo numero
e: el 2 es el modulo de la multiplicación, por lo tanto, si a e z entonces a x 2 = a.

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

step-by-step explanation:

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7