The percent of adults who smoke, recorded every few years since 1967, suggests a negative linear association with no outliers. A line was fit to the data to model the relationship.
Which of these linear equations best describes the given model?
Choose 1
(Choice A)
A
y=-0.5x+40

(Choice B)
B
y=-x+40

(Choice C)
C
y=-2x+40

(Choice D)
D
y=-3x+40

Based on this equation, estimate what percent of adults smoked in 1997.
Round your answer to the nearest tenth of a percent.

the answer is a and it’s 25%

Step-by-step explanation:

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: