the arithmetic sequence a, is defined by the formula : a1=-3 ai=ai-1 -5 find the sum of the first 490 terms in the sequence ​

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)

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

What is the measure of angle 1? a.28 b.152 c.168 d.64