Mathematics, 04.08.2019 14:30 saamiahs
This has 3 questions pls will give ! 1. select from the drop-down menu to correctly identify the property shown: (-3.4+(-9.2))+(-5.6)=-(3.4+9.2)+-(5 .6) associative property , communative property , opposite of a sum property 2. the sale price of an item is 0.75 the original price of the item, x. which statement explains why both 3/4x and 0.75x can find the sale price of the item? a. multiplying by 4/3 is the same as multiplying by 0.8 b. the fraction 3/4 is the same as the decimal 0.w5 therefore, 3/5 can be written as 0.25x c. multiplying by 3/4 is the same as multiplying by 75% d. the expressions are not equivalent. 3. caleb practices piano 20 minutes per day, and he practices guitar 30 minutes per day. which expression represents the never of caleb spends practicing instrument after d days a. 20+d+30+d b. 20d+30d c. 20 (30+d) d. d (20+30)
Answers: 2
Mathematics, 21.06.2019 21:30
In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?
Answers: 1
Mathematics, 21.06.2019 22:30
An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount
Answers: 1
Mathematics, 22.06.2019 00:30
20 points plus brainliest andwer plus my hover hoard im v desperate ! evaluate the polynomial for x=-2 in the equation -3x^3+7x^2-7x-1 (simplify your answer)
Answers: 1
This has 3 questions pls will give ! 1. select from the drop-down menu to correctly identify the...
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