jdkrisdaimcc11
22.04.2021 •
Mathematics
A whale swimming against an ocean current traveled 60 mi in 3 h. Swimming in the opposite direction, with the current, the whale was able to travel the same distance in 1.5 h. Find the speed of the whale in calm water and the rate of the ocean current.
whale
mph
mph
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Ответ:
answer: option 'b' is correct.
step-by-step explanation:
since we have given that
sum of interior angles of a polygon = 900°
let the number of sides be 'n'.
as we now that ,
and we know that the polygon which has 7 sides is known as "heptagon".
hence, option 'b' is correct.