In Exercises 15–24. solve the systems of equations by elimination, if a solution exists.
21.
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- Write a uniform motion problem similar to Example 5.42 that relates to where you live with your friends or family members. Then translate to a system of equations and solve it.arrow_forwardUsing the method of addition, is there only one way to solve the system?arrow_forwardWrite an application problem similar to Example 4.14. Then translate to a system of equations and solve it.arrow_forward
- 10. What are the solutions to the system of equations graphed below? 7.92 |-9.75 10.25 -5.41.arrow_forwardIn Exercises 15–16, solve each system by eliminating variables using the addition method. 15. [3x + 12y = 25 |2r - 6y = 12 x + 3y -x + 2y + 3z 2х - 5у — г 16. 5 13 -8arrow_forward8. Identify the number of solutions from the description of the equations. Two equations are the same on one side but different on the other. • One of the equations in the system can be rewritten so it is identical to the other equation.arrow_forward
- An important application of systems of equations arises in connection with supply and demand. As the price of a product increases, the demand for that product decreases. However, at higher prices, suppliers are willing to produce greater quantities of the product. Exercises 97–98 involve supply and demand. 97. A chain of electronics stores sells hand-held color televisions. The weekly demand and supply models are given as follows: Number sold Demand model per week N = -5p + 750 Price of television Number supplied to the chain per week N = 2.5p. 1apow hjddns a. How many hand-held color televisions can be sold and supplied at $120 per television? b. Find the price at which supply and demand are equal. At this price, how many televisions can be supplied and sold each week?arrow_forward2. Show Complete Solution.arrow_forwardSample Stud 3) y=-3x - 9 -2x - 2y = 10 Solving Systems of Equations using Substitutionarrow_forward
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