College Algebra: Writing Equations from Word Problems (4 Problems)

Please help with the following attached questions:

2,8,12,20

2. If 40L of an acid solution is 75% acid, how much pure acid is there in the mixture?

8. Unknown Numbers: Consider the following problem. The difference between six times a number and 9 is equal to five times the sum of the number and 2. Find the number.

If x represents the number, which equation si correct for solving this problem?
A. 6x - 9 = 5(x + 2)
B. 9 - 6x = 5(x + 2)
C. 6x - 9 = 5x + 2
D. 9 = 6x = 5x + 2

12. Dimensions of a Puzzle Piece: A puzzle piece in the shape of a triangle has perimeter 30 cm. Two sides of the triangle are each twice as long as the shortest side. Find the length of the shortest side.

20. Distance Between Cities: On a vacation, Johnny averaged 50 mph traveling from Denver to Minneapolis. Returning by a different route that covered the same number of miles, he averaged 55 mph. What is the distance between the two cities if his total traveling time was 32 hr?

Solution Summary

This solution provides step by step work for writing the equations from the word problems, and solving, in an attached Word document.

Algebra / Statistics (50 Problems) : Sets, Word Problems and ... 0.58 to a fraction and write your answer in ... bar graph shows the enrollment at a community college. ...

... These questions are typical of the sort asked in introductory College and High School algebra classes. ...Write an equation that illustrates this situation. ...

... MAT 116 Axia College Material Appendix D Landscape ... often use coordinate geometry and algebra as they ... Use Equation Editor to write mathematical expressions and ...

Algebra mathmatics simple problems: I need help in completing the ... 13 out of 25 college students work at part-time jobs. ...Write 8 * 8 * 8 * 8 * 8 * 8 * 8 as a ...

... A committee of colleges, led by Benjamin Bloom (1956 ... those taking basic math to concurrently take algebra. ... 1969: Associate of Arts, Pasadena City College. ...

... answers to his question and how a knowledge of algebra and graphing ... of tuition and fees at public 4-year colleges in 2005. ...Writing this as an inequality gives. ...

... preparatory classes, including geometry, algebra II, chemistry ... enrolled in four-year colleges right out of ... news_info/cbsenior/yr2005/2005-college- bound-seniors ...

... 1999) Perceptual learning in mathematics: The algebra-geometry connection ... Center Tobin Hall Peabody College of Education ... a major goal of most colleges and univer ...

... This must be measurable and written to align ... is used to check student's algebra work or ... State Standards, Preparing American's Students for College & Careers. ...

... something that concerned the individual writing the memo ... President and Fellows of Harvard College; all rights ... strands such as arithmetic, algebra or geometry ...