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which pair of ratios does not form a proportion?

group of answer choices

set b

set d

set a

set c

Aregression was run to determine if there is a relationship between hours of tv watched per day (x) and number of situps a person can do (y). the results of the regression were: y=ax+b a=-0.662 b=30.418 r2=0.703921 r=-0.839

20 da is equal to a. 2,000 cm. b. 2 m. c. 20,000 cm. d. 20,000 mm

The trigonometric ratios sine and secant are reciprocals of each other