3. A 2.75 kg particle moves as function of time as follows: x(t) = 5cos(1.25t+π/4); where distance is measured in meter and time in seconds. (a) What is the amplitude, frequency, angular frequency, and period of this motion? (b) What is the equation of the velocity of this particle? (c) What is the equation of the acceleration of this particle? (d) What is the spring constant? (e) What are the equations for the potential and kinetic energies of the particle? (f) What is the total energy?

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

answer: idk

step-by-step explanation: