Answer:
Step-by-step explanation:
Let the two numbers be x and y
So we have:
using the elimination method, add the two equations together:
solve for x:
substitute our value for x back into the first equation we made:
therefore,
Matrix, help.
2 answers:
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☆ given that ,
ABCD is a parallelogram
☆ we know that ,
opposite angles of a parallelogram are equal.
Therefore ,
therefore , ∠B = 3x = 3 ( 26° ) = 78°
thus option ( A ) is correct ~
hope helpful~