Answers: 1
Mathematics, 21.06.2019 18:00
Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?
Answers: 1
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 22:00
You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?
Answers: 3
Mathematics, 21.06.2019 22:00
Given sinβ
= 1/3 and 0 < β
< Ο/2 ; find tan2β
a. (4β2)/9 b. 9/7 c. (4β2)/7 d.7/9
Answers: 2
HELP PLS and quick find the volume
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