Agroup of kangaroo friends had a jumping contest and measured their jumps. pocket jumped 16 meters, hopster jumped 9 meters, and joey jumped 5 meters. find the mean length.

Mean of the lengths = 10 meters

Step-by-step explanation:

A group for kangaroo friends had a jumping contest and measured their jumps.

Pocket jumped 16 meters. hopster jumped 9 meters and joey jumped 5 meters.

We have to calculate the mean length of their jumps.

Since mean of jumps will be =

Mean =

         =

         = 10 meters

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step-by-step explanation:

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option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,