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melamori03 [73]
3 years ago
8

3.

Mathematics
1 answer:
olasank [31]3 years ago
8 0

Answer:

a)<em> k(x) = 5x - 2</em>

x = 5(y) - 2

5y = x + 2

y = (x+2)/5

<u>k-¹(x) = (x+2)/5</u>

b) <em>h</em><em>(</em><em>x</em><em>)</em><em> </em><em>=</em><em> </em><em>(</em><em>x</em><em>+</em><em>1</em><em>0</em><em>)</em><em>/</em><em>(</em><em>x</em><em>-</em><em>3</em><em>)</em><em> </em>

x = (y+10)/(y-3)

x(y-3) = y + 10

xy -3x = y + 10

xy - y = 3x + 10

y(x-1) = 3x + 10

y = (3x + 10)/(x-1)

<u>h-¹(x) = (3x+10)/(x-1)</u>

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In a topographical map of a city, the vertices of the city limits are A(10,9),B(18,9),C(18,2),D(14,4.5),E(10,4.5). The coordinat
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Step-by-step explanation:

There are several ways you can compute the area of this polygon. We have elected to divide it into a rectangle and a triangle.

The rectangle has dimensions 8 × 4.5, so area ...

  A = LW = 8 × 4.5 = 36 . . . . . square miles

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4 years ago
What does x and y equal
Eva8 [605]

The values are x= 0 and y= -3.

Step-by-step explanation:

         The given equations are,

                 6x-5y=15...........................(1)

                 x=y+3................................(2)

Step:1

       Modify the equation (2) in (x+y=constant) format,

                 x-y=3................................(3)

Step:2

      The equation (3) is multiplied by 5  (5×Eqn(3))

                 5x-5y=15........................(4)

Step:3

      Subtract the equation (1) and (4)

                 6x-5y=15.......................(1)

                 5x-5y=15.......................(4)

      ( - )                                                            (∵ Eqn(1)-Eqn(4))

      (6x-5x)+(-5y+5y)=(15-15)

      (x)+(0)=(0)

      x=0

Step:4

    Substitute the X=0 in the equation (2),

              x=y+3............................(2)

      (∵ x=0)

             0=y=3

             y=-3

Step:5

    Check for solution substitute values of X and Y in equation (1),

          6x-5y=15...........................(1)

     (∵ x=0, y=-3)

          (6×0)-(5×(-3))=15

         15=15

Result:

       The solution for equation 6x-5y=15 and x=y+3 are

       x=0 and y=-3.

     

5 0
3 years ago
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