Answer:
Step-by-step explanation:
360(50/360)=50
Homogeneous mixture: solution
Heterogeneous mixture: colloid and suspension
(a) (i) In first 4 minutes Mary's speed was 600 / 4 = 150 m / minute
(ii) in last 4 minutes her speed was (1000-600) / 4 = 400/4 = 100 m/min
(b) Marys average speed for the whole journey = 1000/8 = 125 m/min
(c) 200 m
(d) Peter arrived at school after 7 minutes . Mary took 8 minutes. Peter first.
(e) Where they met is given by where the 2 curves intersect. That is at time 6.8 minutes and 880 m from Mary's home
(f) At t= 4 dsitance between then is 600 - 400 = 200 m
Length*width*height=volume of rectangular prism
(4.0625/1) * 10000 = 40625/10000. That simplifies to 65/16. The mixed number is 4 1/16
