Which of the following statements would complete the proof

a.)alternate exterior angles are congruent
b.) alternate interior angles are congruent
c.)vertical angles are congruent
d.)same side interior angles are supplementary

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale