$7$ A$)$Generate a $10$x$20$ matrix with random numberv between $$ and $1.$ hanction "randi

$($c$)$ Ads tbe tint matrix in A to a sub$-$unatriv lrom the matrix in $.$ B with a suitable tore:

D$)$ Extract fwo vecters foon the webhid matris in part B$,$ where: $r$ is a row vectos

e$)$ Mlultiply r by'e using matrix muhiplication.

$($if$)$ did tow ather transpritit one of them.

$Cerc$

G$)$ Flip imatriv' $B$ istot thind the diaportal values.

$.$ Find ite indiacs of the valaes that are gfeater of cqual to $3$ in the matroin port It$.$

$(3)$ Delete $10$ nyes fesai the matris it part $A$ :

c$).$ What is the sae of the reigit matrix in part J$?$

$(0$;$20)$

$[$You may wes 'rand', 'randi", 'fiple', "dian', 'find', 'sige', 'length'$]$