An object is propelled upwards at an initial velocity of 120 meters per second. The distance (d) the object is from the ground is found by the formula, d=−4.9t2+120t How many seconds will it take for the object to hit the ground? Enter only the numeric value rounded to 2 decimals. Do not enter units.

For the given circle, enter the requested values. ( x – 3 ) 2 + ( y + 5 ) 2 = 64 Important: Do not enter any extra spaces when entering answers. Enter the x-value of the center of the circle here: x= Enter the y-value of the center of the circle here: y= Enter the radius of the circle here: r=

Solve and enter the value for x. If necessary round answer to 2 decimals. 5−3(x-4)=2x-3 

Suppose A,B, and C are matrices.  0 is the zero matrix and I is an identity matrix. (Assume each matrix is a 2×2 matrix). Select each matrix property below that is false. 

Use a calculator to solve the system (you can use the shortcut here) Round values to only two decimal places. x1 = , x2 = , x3 = , x4 =

Write  the matrix in reduced row echelon form. 6 – 5 8 – 12       2 0

Match each operation with it’s correct answer.

Use augmented matrices to find the inverse, if it exists:

The inverse of this matrix 3-31-4  is wxyz Enter the values for each letter of the inverse. Answers should be written as reduced fractions. w=,  x= y=,   z=

Solve the system by any means and only enter the y value. x-7y=-11 5x+2y=-18