For Exercises 11–30, solve each system using the method of your choice. For systems that do not have one unique solution, also state the number of solutions and whether the system is inconsistent or the equations are dependent. x = − 0.5 y + 0.1 − 10 x − 5 y = 2
For Exercises 11–30, solve each system using the method of your choice. For systems that do not have one unique solution, also state the number of solutions and whether the system is inconsistent or the equations are dependent. x = − 0.5 y + 0.1 − 10 x − 5 y = 2
Solution Summary: The author explains the formula used to solve a system of equations by using the Addition Method.
For Exercises 11–30, solve each system using the method of your choice. For systems that do not have one unique solution, also state the number of solutions and whether the system is inconsistent or the equations are dependent.
state the solution to the system of equations below.
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?
A Graphical Approach to College Algebra (6th Edition)
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