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Questions (6)

For what values of a, b and c does the equation ax^2 + bx + c = 0 have twodistinct solutions? One solution? No solutions?
1. 1 answer
2. 436 views
What is the solution of the system of equations?{-3x - 4y - 3z = -7 {2x - 6y + 2z = 3 {5x - 2y + 5z = 9 A. (5,-2,7) B. (-5,2,7)
1. 10 answers
2. 3,143 views
Solve the system by substitution.{-x - y - z = -8 { -4x + 4y + 5z = 7 { 2x + 2z = 4 Solve the system by elimination. {-2x + 2y +
1. 6 answers
2. 2,680 views
the life of electric bulbs has a normal distribution with a mean of 35 months and a standard deviation of 4 months. What should
1. 2 answers
2. 641 views
This is a statistics question:***(A) Select a random sample of 30 student from our population (we have a data entry to get the
1. 1 answer
2. 493 views
This is a statistics question:(A) Select a random sample of 30 student from our population (we have a data entry to get the
1. 1 answer
2. 556 views