Cho u⃗ =2i⃗ +7j⃗ +k⃗ và v⃗ =3j⃗ −k⃗ . Thực hiện phép tính

u⃗ ×v⃗ =

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)