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Simplified answer is: 13x - 15
Answer:
81
Step-by-step explanation:
Its a perfect square and 27*3=81
Answer:
1
Step-by-step explanation:
So a triangle is always 180°.
If one angle is 90° then we can subtract that from the 180° to find out how much the other two will be.
180°-90°=90°
So the other two angles added together will have to equal 90°.