universal set={members of an expedition to the South pole},A={people born in Africa},C={people born in China},F={females} Amber
1 answer:
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Answer:
Arrow C.
Step-by-step explanation:
Out of three arrows, nearest arrow from the origin will be the best arrow.
Ordered pair for arrow A → (-5, 4)
Distance between A and bullseye =
=
=
= 6.40 units
Ordered pair for arrow B → (5, -5)
Distance between B and bullseye =
=
= 7.1 units
Ordered pair for arrow C → (-2, -6)
Distance between C and the bullseye =
=
= 6.32 units
Distance between C and the bullseye is the shortest.
Therefore, arrow C will be the best arrow.
Answer:
Step-by-step explanation:
Let x = the current of the river
Then 21 + x = the speed going downstream (with the current)
a nd 21 - x = the speed going upstream (against the current)
Distance = speed × time
d = st
t = d/s
Time going downstream = time going upstream
Check:
OK