The expression below is the factorization of what trinomial? (2x + 7)(4x - 3) a. 8x2 + 22x + 4 b. 8x2 + 28x - 21 c. 8x2 + 28x + 4 d. 8x2 + 22x - 21

Find the value of the cosine for angle a

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap