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Dennis mowed his next door neighbor’s lawn for a handful of dimes and nickels, 80 coins in all. Upon completing the job he counted out the coins and it came to $6.60. Which system could be used to find the exact number of dimes and nickels?
-5
b=4, c=3
d+n=80 and 0.10d+0.05n=6.60
-2
(1, -2)
(2, 3)
m=9, n=-3
no solution
2x-y=-8 and 3x+2y=2. What is the value of x if the following equations are true?
-5
b=4, c=3
d+n=80 and 0.10d+0.05n=6.60
-2
(1, -2)
(2, 3)
m=9, n=-3
no solution
y=5x-2 and 10x-2y=8. Tell what kind of solution this system will have.
-5
b=4, c=3
d+n=80 and 0.10d+0.05n=6.60
-2
(1, -2)
(2, 3)
m=9, n=-3
no solution
2x+8y=2 and x+by=c For what values of b and c would the system have NO solution?
-5
b=4, c=3
d+n=80 and 0.10d+0.05n=6.60
-2
(1, -2)
(2, 3)
m=9, n=-3
no solution
15x+3y=9 and 10x+7y=-4. What is the solution to this system?
-5
b=4, c=3
d+n=80 and 0.10d+0.05n=6.60
-2
(1, -2)
(2, 3)
m=9, n=-3
no solution
If a-b=7 and 2a+b=-1, then b=
-5
b=4, c=3
d+n=80 and 0.10d+0.05n=6.60
-2
(1, -2)
(2, 3)
m=9, n=-3
no solution
y=2x-1 and 3x+3y=15 What is the solution to this system?
-5
b=4, c=3
d+n=80 and 0.10d+0.05n=6.60
-2
(1, -2)
(2, 3)
m=9, n=-3
no solution
-3x+y=2 and mx+ny=-6 For what values of m and n would the system have infinite solutions?
-5
b=4, c=3
d+n=80 and 0.10d+0.05n=6.60
-2
(1, -2)
(2, 3)
m=9, n=-3
no solution
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