Concept explainers
(a)
To calculate: The percent of the total population of the different age group in
(b)
To calculate: The change in percent of the population from
(c)
Which gender
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
College Algebra Real Mathematics Real People Edition 7
- A drama teacher assigns final grades in her class based on the weighted system shown below. The matrix G represents the grades for Kiyo and his two friends, Rachel and Leo. Write matrix W as a 1 x 3 matrix to represent the weighted grading system. Preform matrix multiplication to find the final grades for each of the three studentsarrow_forwardPlease ignore what I put. Please give the answers clearly, thank you!arrow_forwardThe Alpha club and the beta club perform service work for the Salvation Army, the Boy's Club, and the Girl Scouts. The Alpha Club performs 50 hours at the Salvation Army, 85 hours at the Boys' Club, and 68 hours for the Girl Scouts. The Beta Club performs 65 hours at the Salvation Army, 32 hours at the Boys' Club, and 94 hours for the Girl Scouts. Tabulate the given data.a. Represent your table as matrix M, a 2 x 3 matrix.b. Determine the Transpose of your answer in a.arrow_forward
- 1. Determine the size of the matrix, if not possible, state why. Pay attention to multiplication verses addition when looking for the size! A4X2 – 3B4X2 a. b. A4x2 B2X12 C. B10x3 A10x3arrow_forwardStudents at a high school can participate in three sports: softball, basketball, and soccer, with separate teams for boys and girls. The participation matrices for 2016 and 2017 are given below, where the rows represent softball, basketball, and soccer, respectively, and the columns represent boys and girls, respectively. Complete parts a and b below. P2016 127 114 147 127, 2017 119 165 121 112 154 128 118 163 a) Find P = P2017 - P2016, and explain what each entry in P represents. P= (Type an integer or decimal for each matrix element.) Complete the statement below to explain what each entry in P represents. participation in each sport, where the first column represents and the third row represents Each entry in P represents the second row represents b) Suppose P2018 = 0.96P2 2017. Find P2018, and explain what it could represent. P2018 (Type an integer or decimal for each matrix element. Round to the nearest integer as needed.) What could the matrix P2018 represent? Each entry in the…arrow_forwardHi, can I please have this practice question answered? Thank you!arrow_forward
- Find the product of the matrices. 2 - 1 1 2 3 1 3 4 5 6arrow_forwardMultiply the matrixarrow_forwardThe table below represents the data for the salaries of 4 secretarial workers at a local law firm. The first row represents each employee's wage per hour, and the next 6 rows represent the amount of hours each person worked for the corresponding days of this 1 week time period. (The law firm is closed on Sundays) Use matrix multiplication to find the amount of money this law firms paid their secretaries each day of the week.arrow_forward
- College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage LearningAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageCollege AlgebraAlgebraISBN:9781305115545Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning