How can i find x?

A. 80

B. 60

C. 20

D. 40

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4 Answers

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  • 4 weeks ago

    (x - 10) + (160 - 2x) = 90

    x = 60

    Answer choice:

    B. 60

  • 1 month ago

    x-10+160-2x=90

    -x+150=90>>-z=-60

    x=60>>x-10=        50

    160-2x=                40

  • 1 month ago

    Since angle ABD is 90° and AB is colinear with AC, that means angle CBD is also 90° as the sum must be 180°.

    Now we know that BCD is 90° it's split up again into two parts (x - 10)° and (160 - 2x)°.  Add them together, set them equal to 90, then sovle for x:

    (x - 10) + (160 - 2x) = 90

    x - 10 + 160 - 2x = 90

    -x + 150 = 90

    -x = -60

    x = 60 (answer B)

  • 1 month ago

    (x -10)° + (160 -2x)° = 90°

    (150 -x)° = 90°

    -x° =  90° - 150 °

     -x = -60 °

    60 ° = x

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