Answer:
a) 11
Step-by-step explanation:
Since activity H came before all other activities, we can discard 14 and 18 as possible answers. Also the exercise tells us that all those activities came immediately after activity H, that means that activity H finishes right before the first activity from K, M and S starts. This means that activity H should end at 11, because that is the start time for the first activity.
-.5x^2 = -6x + 20
-.25x = -6x + 20
+6x +6x
5.75x = 20
/5.75 /5.75
x = 3.48
Answer:
Step-by-step explanation:
area including track=area of 2 semi circles+area of rectangle
=2×1/2×π×46²+86×65
=2116 π+5590
area of grass=2×1/2×π×40²+80×65=1600π+5200
≈10226.55 m²
area of track=2116π+5590-1600π-5200
=516π+390
≈2011.06 m²
The range = highest value - lowest = 86 - 13 = 73.
arrange in order:-
13 42 45 46 47 74 86
median = 46
First quartile = (42 + 45) / 2 = 43.5
third quartile = (74 - 47) / 2 = 60.5
