Answer:
Step-by-step explanation:
Alright, lets get started.
Suppose they take t minutes to meet each other.
Distance covered by first friend in t minutes, = 0.2 *t=0.2∗t
Distance covered by second friend in t minutes , =0.15 *t=0.15∗t
Total distance is given as 7, so
0.2 t + 0.15 t = 70.2t+0.15t=7
0.35 t = 70.35t=7
t = 20t=20
means after 20minutes they will meet.
SO. the average speed is 10m: Answer
I don’t know “which substance” are you talking about??
You can put the picture there so we can see.
The answer would be strength. Because the Ph is the measurement of how strong or how high the hydronium ion in a solution
Answer:it's called unsaturated solution, because that's it's definition
