The real numbers x and y satisfy the equations: xy - x = 180 and y + xy = 208.
Let the two solutions be (x1, y1 and (x2, y2).
What is the value of x1 + 10y1 + x2 + 10y2

The value of is 317.

Step-by-step explanation:

Let the system of nonlinear equations be:

(1)

(2)

From (1), we clear :

Let apply this resulting expression in (2):

By the Quadratic Formula we obtain the solution of the second order polynomial:

and

And the respective values of are, respectively:

If we know that , , and , then the value of is:

The value of is 317.

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

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step-by-step explanation: