Concept explainers
(a)
To explain: whether the number of students is greater than or less than 20
(a)
Answer to Problem 50E
The number of students is greater than 20.
Explanation of Solution
Given:
Calculation:
Greater than 20. For the first 3 meetings, 2 meetings had less than 20 people. So the other 2 meetings must have more than 20 people in order for the average to be 20.
Conclusion:
The number of students is greater than 20.
(b)
To Estimate: the number of students who attended the fourth meeting.
(b)
Answer to Problem 50E
The number of students attended the fourth meeting is about 24 people.
Explanation of Solution
Calculation:
The number of students attended the fourth meeting is about 24 people.
The first meeting had 2 less than 20 people, the second meeting had 1 more than 20 people, and the third meeting had 3 less than 20 people.
Conclusion:
The number of students attended the fourth meeting is about 24 people.
(c)
To describe: a way used to estimate the part (b).
(c)
Answer to Problem 50E
Part (b) is estimated by finding the average.
Explanation of Solution
Calculation:
Write and solve an equation to check the estimate.
Conclusion:
Part (b) is estimated by finding the average.
Chapter 1 Solutions
BIG IDEAS MATH Integrated Math 1: Student Edition 2016
- Discrete Mathematics and Its Applications ( 8th I...MathISBN:9781259676512Author:Kenneth H RosenPublisher:McGraw-Hill EducationMathematics for Elementary Teachers with Activiti...MathISBN:9780134392790Author:Beckmann, SybillaPublisher:PEARSON
- Thinking Mathematically (7th Edition)MathISBN:9780134683713Author:Robert F. BlitzerPublisher:PEARSONDiscrete Mathematics With ApplicationsMathISBN:9781337694193Author:EPP, Susanna S.Publisher:Cengage Learning,Pathways To Math Literacy (looseleaf)MathISBN:9781259985607Author:David Sobecki Professor, Brian A. MercerPublisher:McGraw-Hill Education