Suppose a certain series of gymnastic moves takes 35 seconds to complete. if a gymnast does that series seven times in a row, how long does it take her to complete them all?

  4 minutes 5 seconds

Step-by-step explanation:

Without additional information, we have to assume that one sequence can begin immediately after another, and that each takes the same amount of time. The total time for 7 sequences is 7 times the time for one sequence.

  7 × 35 seconds = 245 seconds = 4 minutes 5 seconds

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There are 60 seconds in a minute.

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.