What is the average rate, in m/s, at which these 6 dolphins swam during this observation? i know the answer is 64 but i wanna know how to do it.

You would just add up all of the values and divide by six to get the average

Total Distance = (40 x 10) + (60 x 20) + (30 x 20) + (90 x 30) + (50 x 30) + (80 x 40) = 9600 m

Total time = 10 + 20 + 20 + 30 + 30 + 40 = 150 sec

Average = 9600 ÷ 150 = 64m/s

-

64m/s

answer is:

1.75 pounds

explanation:

remove parenthesis:

=

apply rule

=

multiply fractions:

=

=

divide:

=

mordancy.