The velocity of a pendulum changes at a rate of a(t) = 0.9' cos(0.2t) meters per second squared (where t is the time in seconds). At time t = 6, the velocity of the pendulum is 0.8

meters per second. By how much does the velocity change between t = 6 and t = 12

seconds?

Which expression can we use to solve the problem?

What is the missing statement in step 4? ? rts ? ? vtu and ? rtu ? ? vts ? rts ? ? rvs and ? rtu ? ? stv ? vrs ? ? vru and ? usr ? ? usv ? vur ? ? vus and ? uvs ? ? sru

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no