Answer:
A
Step-by-step explanation:
Answer:
How can the solution be located?
find the intersection
Which integers is the x-coordinate between?
0 and 1
Which integers is the y-coordinate between?
2 and 3
What is the solution approximated to the tenths place?
(0.4,2.8)
Step-by-step explanation:
1. Convert percent into decimal (it will help)
2. Convert Decimal to fraction
(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
Answer: Strong positive correlation, 0.9663
Step-by-step explanation:
