Mathematics, 20.02.2021 14:10 byron17

The value of k for which x²-4kxy+4y²=0 represent a pair of straight is?

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Mathematics, 21.06.2019 14:10, uhhgray

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it. how many multiple-choice questions are on the test?

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Mathematics, 21.06.2019 19:30, estherstlouis7812

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show

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Mathematics, 21.06.2019 21:00, samiiegarciia

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

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Mathematics, 21.06.2019 21:30, amesha62

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?