A row operation is performed on a matrix as shown below. [ 2 -1 1 | 4 ] [0 -3 x | -18 ]
[ 1 1 1 | 11 ] --> [ 1 1 1 | 11 ]
[4 -2 2 | 5 ] [4 -2 2 | 5 ]

What is the value of x?
a. -2
b. -1
c. 0
d. 3

Which system of linear inequalities is graphed? can somebody pleasssse

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p