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7. Find x and y. I can’t figure these out pls help

7 Find X And Y I Cant Figure These Out Pls Help class=

Sagot :

Answer:

Step-by-step explanation:

5.  The opposite angles of a cyclic quadrilateral sum to 180 so

9y + 5 + 18x + 4 = 180  and

9y - 9 + 21x + 6 = 180

Solve this system to find x and y.

7. Solved in the same way.

Have to go right now so i cant help you any further.

Answer:

X=4 y=11

Step-by-step explanation:

9y+5+18x+4=180 9y=171-18x

9y-9+21x+6=180 9y=183-21x

171-18x=183-21x

3x=12 x=4 9y=171-72=99 y=11

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