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OpenStudy (anonymous):
The sum of two numbers is 145. Their difference is 45. What are the numbers?
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OpenStudy (campbell_st):
x + y = 145 x - y = 45 add the equations gives 2x = 190 x = 95 use this to find y
OpenStudy (anonymous):
would the answer be 50 and 95?/
OpenStudy (campbell_st):
they add to 145
OpenStudy (anonymous):
yes they do
OpenStudy (campbell_st):
then there is the answer
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OpenStudy (anonymous):
thanx alot
OpenStudy (anonymous):
How many solutions does the system of equations below have? 2y - x = 5 3x - 6y = 5
OpenStudy (campbell_st):
in... they are both straight lines so will only intersect at one point... so the solution is an ordered pair
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