Set up a proportion
6/8 ≈ 18/x
cross multiply and solve for x, and get
x≈24
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For the equation:
-1=5 x^2 - 2 x
5 x^2 - 2 x + 1 = 0, then we substitute: a=5, b=-2, c =1
to discriminant formula: D= b^2 - 4 a c = (-2)^2 - 4 * 5 * 1 = 4 - 20 = - 16
Answer:
The discriminant is equal to -16 which means the equation has no real number solutions.
Answer: x=2
Step-by-step explanation: Solve for x in the first equation.
Hope this helps you out! ☺
