Aimee must add together the following numbers: 3.50 + 4.00 + (−1.25) + (−7.50) + 5.25 + 2.00 as her first step, aimee writes: (3.50 + (–7.50)) + (–1.25 + 5.25) + (4.00 + 2.00)which is the best explanation of what aimee did in this step? a. aimee used the associative and commutative properties to put opposite numbers together. b. aimee used the identity property to put numbers with the same values after the decimal point together. c. aimee used the associative and commutative properties to put numbers that are easy to add next to each other. d. aimee used the inverse property to pair each positive decimal with a negative decimal so that they will cancel out.

Which property is illustrated by the statement given below? raj raj.

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)

In a test for esp (extrasensory perception), the experimenter looks at cards that are hidden from the subject. each card contains either a star, a circle, a wave, a cross or a square.(five shapes) as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. when the esp study described above discovers a subject whose performance appears to be better than guessing, the study continues at greater length. the experimenter looks at many cards bearing one of five shapes (star, square, circle, wave, and cross) in an order determined by random numbers. the subject cannot see the experimenter as he looks at each card in turn, in order to avoid any possible nonverbal clues. the answers of a subject who does not have esp should be independent observations, each with probability 1/5 of success. we record 1000 attempts. which of the following assumptions must be met in order to solve this problem? it's reasonable to assume normality 0.8(1000), 0.2(1000)%30 approximately normal 0.8(1000), 0.2(1000)% 10 approximately normal srs it is reasonable to assume the total number of cards is over 10,000 it is reasonable to assume the total number of cards is over 1000