Recall all interior angles in a triangle add up to 180°, therefore
Answer:
sub 2 me on youtu jb.officail
Step-by-step explanation:
Just add the like terms ~
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We simply divide both sides by 0.9;
8.1 = 0.9a
a =
a = 9
175 red squares out of 1000 squares = 175/1000 = 0.175 of the design is red.