Martha's bathroom is shaped like a rectangle with dimensions of 5ft by 7ft. the floor of the room is made of decorative square tiles with a side length of 1/4 ft. what is the number of decorative tiles martha will need to purchase?

Find |−5|. a. −5 b. 5 c. one-fifth d. –one-fifth !

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The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?