Answer:
The required position of the particle at time t is: 
Step-by-step explanation:
Consider the provided matrix.



The general solution of the equation 

Substitute the respective values we get:


Substitute initial condition 

Reduce matrix to reduced row echelon form.

Therefore, 
Thus, the general solution of the equation 


The required position of the particle at time t is: 
A is the answer, the proportion RS/VU=2, the proportion of ST/UT=2, an angle S is equal to angle U, both 90 degrees. RS/VU, side, angle S = to angle U, angle and ST/UT, side.
Answer:
x=-3, y=-6. (-3, -6).
Step-by-step explanation:
-4x+y=6
-5x-y=21
--------------
-9x=27
x=27/-9
x=-3
-5(-3)-y=21
15-y=21
y=15-21
y=-6
Just divide 36 by 48, and you will get that he made 75% of his free throws.