Question

$5x \: + \: y \: = \: - 13 \\ 3x \: - \: 2y \: = 0$
please give me answers
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Answer 1

Answer:

Let X,Y and Z be three independent random variables with X∼N(μ,σ2), and Y,Z∼Uniform(0,2). We also know that

E[X2Y+XYZ]=13, E[XY2+ZX2]=14.

Find μ and σ.

Answer 2

Step-by-step explanation:

Solve  by using the Quadratic Formula.



Solve  by using the Quadratic Formula.



Solve a quadratic equation using the Quadratic Formula.

Write the Quadratic Formula in standard form. Identify the , , and  values.

Write the Quadratic Formula. Then substitute in the values of , , and 

Simplify.

Check the solutions.

If you say the formula as you write it in each problem, you’ll have it memorized in no time. And remember, the Quadratic Formula is an equation. Be sure you start with ‘’.

Solve  by using the Quadratic Formula.

Solution

This equation is in standard form.Identify the a, b, c values.Write the Quadratic Formula.Then substitute in the values of a, b, c.Simplify.



Rewrite to show two solutions.Simplify.

Check.



Solve  by using the Quadratic Formula.



Solve  by using the Quadratic Formula.