Y = 5x - 8 4x + 3y = 33 el valor de x es ?
1 answer:
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Answer:
x ∈ {-3, 1.2, 1.25}
Step-by-step explanation:
"Solve" is non-specific as to the solution required. We assume you want the x-intercepts.
A graph shows the zeros to be ...
- x = -3
- x = 1.2
- x = 1.25
The equation can be factored as ...
y = (1/2)(x +3)(4x -5)(5x -6)
The 25th percentile corresponds to z ≈ -0.67.
The 90th percentile corresponds to z ≈ 1.28.
So, you can write two equations in μ and σ as here:
.. μ -0.67σ = 10
.. μ +1.28σ = 20
The solution is
.. μ ≈ 13.45
.. σ ≈ 5.11
The 90th percentile corresponds to z ≈ 1.28.
So, you can write two equations in μ and σ as here:
.. μ -0.67σ = 10
.. μ +1.28σ = 20
The solution is
.. μ ≈ 13.45
.. σ ≈ 5.11