Find (a) the orthogonal projection of b onto Col A and (b) a least-squares solution of Axequalsb. Aequals[Start 3 By 2 Matrix 1st Row 1st Column negative 1 2nd Column 4 2nd Row 1st Column 1 2nd Column 8 3rd Row 1st Column negative 1 2nd Column 4 EndMatrix ], bequals[Start 3 By 1 Matrix 1st Row 1st Column 12 2nd Row 1st Column negative 4 3rd Row 1st Column 2 EndMatrix ]a. The orthogonal projection of b onto Col A is ModifyingAbove Bold b with caretequals nothing. (Simplify your answers.)

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

Evaluate the expression. (9 + 5)(3 + 2)0

What number line represents the solution set for the inequality -1/2 greater than or equal to 4