Acircle is centered on point bb b b . points aa a a , cc c c and dd d d lie on its circumference. if ∠adc\orange{\angle adc} ∠adc start color #ffa500, angle, a, d, c, end color #ffa500 measures 61∘61^\circ 61 ∘ 61, degrees , what does ∠abc\blue{\angle abc} ∠abc start color #6495ed, angle, a, b, c, end color #6495ed measure? ∘^\circ ∘ degrees

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.