What is the value of x in the figure?

x = 100

Step-by-step explanation:

x + 23 + 57 = 180     {linear pair}

    x +  80   = 180

              x = 180 -80

             x = 100

100

Step-by-step explanation:

Since the line is straight you know that both angles add up to 180 degrees.

You can create this equation:

57+x+23=180

And then solve

80+x=180

x=100

Hope this helps!

3 ft

step-by-step explanation:

since the triangle is right use pythagoras' identity to solve for a

the square on the hypotenuse is equal to the sum of the squares on the other two sides, that is

a² + 8² = ( )²

a² + 64 = 73 ( subtract 64 from both sides )

a² = 9 ( take the square root of both sides )

a = = 3

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step-by-step explanation: