Mathematics, 11.12.2019 02:31 itzzzabbi
Two numbers add up to 23. 7 times the difference of the two numbers is 21. what are the two numbers?
define the variables: let x = first number, let y = second number
equation 1:
equation 2:
solve the system:
1st number:
2nd number:
show work on how to get the answers.
Answers: 1
Mathematics, 21.06.2019 22:30, campilk5
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Arandomized controlled trial is designed to evaluate the effect of metoprolol in patients with heart failure. while preparing for statistical analysis, the researcher reviews some common types of statistical errors. which of the following statements is true regarding a type i error in a clinical study? a. the study is not significantly powered to detect a true difference between study groups. bthe null hypothesis is true but is rejected in error. c. the null hypothesis is false but is accepted in error. d. type i error is also known as beta and is usually 0.1 or 0.2. e. type i error depends on the study's confidence interval.
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Mathematics, 22.06.2019 01:30, alialoydd11
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Answers: 3
Two numbers add up to 23. 7 times the difference of the two numbers is 21. what are the two numbers?...
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