1- el doble de la edad de juan mas la mitad de su edad es mayor que su edad aumentado en 15 ´¿cual es la minima edad que puede tener juan?
ayuda porf rapido

2- cinco veses la edad de doris menos el doble de su edad resulta ser menor que la mitad de su edad mas 40
¿ cual es la maxima edad que podria tener doris ?

answer: h

step-by-step explanation:

- "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."

answer: the correct answer is -32

step-by-step explanation: