Find the coordinates of the intersection of the diagnosis of the parallelograms (-2,-1) (1,3) (6,3) and (3,-1)

Step-by-step explanation:

Represent the diagonals as:

Required

Determine the coordinate of the intersection

To do this, we simply calculate the midpoint of AC or BD.

For AC:

The midpoint is:

This gives:

For BD:

The midpoint is:

This gives:

Notice the midpoints are the same:

Hence, the coordinates of the intersection is (2,1)

19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19

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step-by-step explanation: