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MissTica
3 years ago
10

courtney has 155 coins in her purse. all of the coins are quarters and dimes, worth a total of $30.20. how many quarters does sh

e not have?
Mathematics
1 answer:
Assoli18 [71]3 years ago
3 0

Answer: she would have 98 quarters

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Answer:

The two points solutions to the system of equations are: (2, 3) and (-1,6)

Step-by-step explanation:

These system of equations consists of a parabola and a line. We need to find the points at which they intersect:

x^2-2x+3=-x+5\\x^2-2x+x+3-5=0\\x^2-x-2=0\\(x-2)(x+1)=0

Since we were able to factor out the quadratic expression, we can say that the x-values solution of the system are:

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when x = 2 then  y=-(2)+5=3

when x= -1  then  y=-(-1)+5=6

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