Bài 1. Tìm ma trận nghịch đảo của các ma trận sau A=


−1 −1 2
3 2 −5
−2 −1 −1

 ; B=


1 −1 0 0
−1 1 −1 0
0 −1 1 −1
0 0 −1 1


; C=


1 −1 −1 −1
−1 1 −1 −1
−1 −1 1 −1
−1 −1 −1 1



Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

10x − 5y + 14 = 0 whats the answer pls

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)