Mathematics, 29.07.2019 06:00 182075
The sum of emil’s and rosa’s ages is 27 years. nine years ago emil was twice as old as rosa was then. how old is each person?
Answers: 1
Mathematics, 21.06.2019 18:00
The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.
Answers: 1
Mathematics, 21.06.2019 18:40
2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
Answers: 1
The sum of emil’s and rosa’s ages is 27 years. nine years ago emil was twice as old as rosa was then...
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