Mathematics, 02.08.2019 11:40, july00
A15-foot ladder must make an angle of 30° with the ground if it is to reach a certain window. what angle must a 20-foot ladder make with the ground to reach the same window? a. 22 degrees b. 38 degrees c. 42 degrees d. 48 degrees
Answers: 2
Mathematics, 21.06.2019 20:00, martinezjulio1976
Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39
Answers: 1
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?
Answers: 1
Mathematics, 21.06.2019 22:00, sarahnd6907
Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota
Answers: 2
A15-foot ladder must make an angle of 30° with the ground if it is to reach a certain window. what a...
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