Mathematics, 05.02.2021 01:40 leledaisy1994
For the linear system, multiply the first equation by 2 and add the new equation to the second equation. Then, graph this new equation along with both of the original equations.
{3x + 3y=18
{ −17x + 5y=−58
The new equation is in standard form.
Answers: 3
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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?
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Two numbers have a sum of -19. one number is x. what expression represents the other number?
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Mathematics, 22.06.2019 00:30
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