A scale model of a car has a scale of 1 : 70. The real-life length of the car is 3.5 m.
Find the length of the scale model.
Give your answer in cm.​

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

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Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.