Mathematics, 26.10.2021 14:00 calthecrystal
O is the centre of the sector OAB, CD is another arc with centre O and radius r cm. DB = 2cm. If the area of ABDC is one third of the area of the sector OCD, find the value of r
Answers: 2
Mathematics, 21.06.2019 17:10
The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?
Answers: 1
Mathematics, 21.06.2019 17:30
The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.
Answers: 3
Mathematics, 21.06.2019 19:30
Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?
Answers: 3
Mathematics, 21.06.2019 19:30
You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?
Answers: 2
O is the centre of the sector OAB, CD is another arc with centre O and radius r cm. DB = 2cm. If the...
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