Extraneous solutions of equations
Which value for the constant c makes w
5 an extraneous solution in the following equation?
✓29 + 40 = 23 - CW
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Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Solve the equation by completing the square. x^2+2x=17

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.