floydsidney1119
28.01.2020 •
Mathematics
Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. 2x − y = 2 3x + y = −6 one and only one solution infinitely many solutions no solution find the solution, if one exists. (if there are infinitely many solutions, express x and y in terms of the parameter t. if there is no solution, enter no solution.) (x, y) =
Solved
Show answers
More tips
- H Health and Medicine What are Electronic Cigarettes? The Ultimate Guide...
- C Computers and Internet How to Get Rid of 3pic Infector: Everything You Need to Know...
- A Auto and Moto Experience the World of the Most Expensive Cars on the Planet...
- S Style and Beauty How to Get Rid of a Double Chin?...
- F Food and Cooking How to Cook Julienne? Recipes and Tips...
- D Dating, Love, Relationships 10 Useful Tips on How to Survive a Breakup?...
- F Food and Cooking Apple Cider Vinegar: The Ultimate Health and Beauty Solution...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
Answers on questions: Mathematics
- M Mathematics All of the angles of a quadrilateral are congruent. Is the quadrilateral a parallelogram? (lf so, could it be something more specific?) Give a yes or no answer along with an...
- M Mathematics Write an equation that involves multiplication,addition, contains a variable and has a solution of 8....
- B Business In 2001, President George W. Bush and Federal Reserve Chairman Alan Greenspan were both concerned about a sluggish U.S. economy. They also were concerned about the large U.S....
- B Business What is the difference between simple and compounding interest. A) Compounding interest creates exponential growth B) Simple interest creates exponential growth C) There really...
- M Mathematics The proportion of the budget for a certain type of industrial company that is allotted to environmental and pollution control is coming under scrutiny. a data collection project...
- M Mathematics Basil’s work neeed ! scale factor 24/6 = 4side a 4 x 2 = 8 side b 4 x 4 = 16 perimeter 24 + 16 + 8 + 8 - 56 where, if any, did basil first make a mistake in his work? basil...
Ответ:
Step-by-step explanation:
You know there is only one solution because the ratio of x- and y-coefficients is different in the two equations. That means the lines will have different slopes, so must intersect in exactly one point.
__
The y-coefficients are opposites, so you can eliminate the y-variable by adding the equations:
(2x -y) + (3x +y) = (2) + (-6)
5x = -4
x = -4/5 = -0.8
Substituting this into the second equation, we have ...
3(-0.8) +y = -6
y = -3.6 . . . . . . . add 2.4 to both sides
The solution is (x, y) = (-0.8, -3.6).
__
You can also find the solution by graphing (or using a graphing calculator).
Ответ:
17 +(10x1)= 21+(5x1)
17+10=21+5
27=27
So your answer is it takes 1 mile per day
Hope its right lol