A particle moves along the x-axis such that at any time t its position is given by s(t)=1/2 sin t+cos2t. What is the acceleration of the particle at time t=π/2?

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is