Awater well is to be drilled in the desert where the soil is either rock, clay or sand. the probability of rock p(r)equals=0.53. the clay probability is p(c)equals=0.21. the sand probability is p(s)equals=0.26. if the soil is rock, a geological test gives a positive result with 35% accuracy. if it is clay, this test gives a positive result with 48% accuracy. the test gives a 75% accuracy for sand.
given the test is positive, what is the probability that the soil is clay, p(clay | positive)? use bayes' rule to find the indicated probability.

We must first determine the shape of a rectangular prisms _ a0 to find area of the prism

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

How do you write y-10=2 (x-8) in standard form