A square matrix is called idempotent if (we write to represent ). Suppose that ( ) is a matrix such that is invertible. Prove that both and I_n-〖X〈X^' X〉〗^(-1) X^' are idempotent. (Hint: use this property of matrix multiplication: ).

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

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step-by-step explanation: