At a high school, students can choose between three art electives, four history electives, and five computer electives. Each student can choose two electives. Which expression represents the probability that a student chooses an art elective and a history elective?

StartFraction 7 C 2 Over 12 C 2 EndFraction
StartFraction 7 P 2 Over 12 P 2 EndFraction
StartFraction (3 C 1) (4 C 1) Over 12 C 2 EndFraction
StartFraction (3 P 1) (4 P 1) Over 12 P 2 EndFraction

coin flip

non-answer:

choosing

sorry if this isnt what you're looking for i dont really understand the question

for future students the answer is b

hope i

-lavira: )

55.44 inches

step-by-step explanation:

part a. assuming a perfectly linear relationship, we can find the slope from the first two data points.

slope = m = (change in rainfall)/(change in years)

= (61.80 -62.33)/(2005 -2004) = -0.53/1 = -0.53

then the point-slope form of the equation of the line can be written as

y = m(x -h) +k . . . . . m = -0.53, (h, k) = (0, 62.33)

y = -0.53x +62.33 . . . x = years after 2004

part b. in 2017, x = 2017 -2004 = 13. then the predicted rainfall is

y = -0.53·13 +62.33 = 55.44 . . inches

the predicted rainfall in 2017 is 55.44 in.

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