In Exercises 41, use the four-step strategy to solve each problem Use x, y and z to represent unknown quantities- Then translate from the verbal conditions of the problem to a System of three equations in three variables.
The bar graph shows the average number of hours U.S. college students study per week for seven selected majors-Study times are rounded to the nearest hour.
Source: statista.com
The combined weekly study time for students majoring in chemical engineering, mathematics, and psychology is 52 hours. The difference between weekly study lime for chemical engineering majors and math majors is 6 hours. The difference between weekly study time for chemical engineering majors and psychology majors is 8 hours, find the average number of hours per week that chemical engineering majors mathematics majors, and psychology majors spend studying.
Want to see the full answer?
Check out a sample textbook solutionChapter 5 Solutions
COLLEGE ALGEBRA-MYMATHLAB 18 WEEK >I<
- ◄ Listen A vacant lot is being converted into a community garden. The garden and a walkway around its perimeter have an area of 560 square feet. Find the width of the walkway (x) if the garden measures 15 feet wide by 19 feet long. Write answer to 2 decimal places. (Write the number without units). X 15 feet Your Answer: 19 feet Xarrow_forwardListen A stuntman jumps from a roof 440 feet from the ground. How long will it take him to reach the ground? Use the formula, distance, d = 16t2, (where t is in seconds). Write answer to 1 decimal place. (Write the number, not the units). Your Answer:arrow_forwardSolve x² - 10x + 24 = 0 ○ A) 4,6 B) -12, -2 C) 12,2 D) -4, -6arrow_forward
- Factor the polynomial completely. x^2- 9 A) (x - 1)(x -9) B) (x - 3)(x + 3) c) (x -3)(x-3) D) (x + 3)(x + 3)arrow_forwardDirections: Use the equation A = Pet to answer each question and be sure to show all your work. 1. If $5,000 is deposited in an account that receives 6.1% interest compounded continuously, how much money is in the account after 6 years? 2. After how many years will an account have $12,000 if $6,000 is deposited, and the account receives 3.8% interest compounded continuously? 3. Abigail wants to save $15,000 to buy a car in 7 years. If she deposits $10,000 into an account that receives 5.7% interest compounded continuously, will she have enough money in 7 years? 4. Daniel deposits $8,000 into a continuously compounding interest account. After 18 years, there is $13,006.40 in the account. What was the interest rate? 5. An account has $26,000 after 15 years. The account received 2.3% interest compounded continuously. How much was deposited initially?arrow_forwardTRIANGLES INDEPENDENT PRACTICE ription Criangle write and cow Using each picture or description of triangle write and solve an equation in ordering the number of degrees in each angle TRIANGLE EQUATION & WORK ANGLE MEASURES A B -(7x-2)° (4x) (3x)° (5x − 10) C (5x – 2) (18x) E 3. G 4. H (16x)° LL 2A= 2B= ZE=arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Algebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellElementary AlgebraAlgebraISBN:9780998625713Author:Lynn Marecek, MaryAnne Anthony-SmithPublisher:OpenStax - Rice University
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage LearningHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL