Consider an n m matrix
a = qr,
where q is an n m matrix with orthonormalcolumns and
r is an uppertriangular
m m matrix with positive diagonalentries
.express
det(ata) in terms of the
scalarsrii. what can you say about the sign
ofdet(ata)?

Atriangle has sides with lengths of 10 yards, 13 yards, and 18 yards. is it a right triangle?

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

Pleting the square f the given find the x-intercepts of the parabola with vertex (-5,13) and y-intercept (0, 12). write your answer in this form: (14,.99). if necessary, round to the nearest hundredth. *- h enter the correct answer, de verter, and ametry 00000 done doo