Mathematics, 10.02.2021 01:40 lizdeleon248
1) Maggie shook 100 pennies in a container and counted how many landed heads up. Approximately what fraction of pennies would you expect to land heads up?
a) 1/4
b) 1/2
c) 3/4
d) 4/4
2) If three half-lives have passed, what fraction of the isotopes will still be parents?
a) 1/2
b) 1/4
c) 1/8
d) 1/16
3) A sample has a half-life of 1000 years. 1/4 of the isotopes are parents. How old is it?
a) 250 years
b) 500 years
c) 2000 years
d) 4000 years
4) A sample has a half-life of 1 million years. 1/8 of the isotopes are parents. How old is it?
a) 250,000 years
b) 500,000 years
c) 2 million years
d) 3 million years
(answer all and I will mark your answer the brainliest or you can just answer one)
Answers: 1
Mathematics, 21.06.2019 17:00
One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?
Answers: 3
Mathematics, 21.06.2019 18:00
Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?
Answers: 2
Mathematics, 21.06.2019 20:00
Ana drinks chocolate milk out of glasses that each holdof a liter. she has of a liter of chocolate milk in her refrigerator. 10 how many glasses of chocolate milk can she pour?
Answers: 2
Mathematics, 21.06.2019 20:30
Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.
Answers: 1
1) Maggie shook 100 pennies in a container and counted how many landed heads up. Approximately what...
English, 24.03.2020 15:21
Mathematics, 24.03.2020 15:24
History, 24.03.2020 15:25
Mathematics, 24.03.2020 15:25
English, 24.03.2020 15:26
Mathematics, 24.03.2020 15:26
Mathematics, 24.03.2020 15:26
Mathematics, 24.03.2020 15:26
Mathematics, 24.03.2020 15:26
Mathematics, 24.03.2020 15:27
Mathematics, 24.03.2020 15:27
Mathematics, 24.03.2020 15:27
Mathematics, 24.03.2020 15:27
English, 24.03.2020 15:28
Mathematics, 24.03.2020 15:29