This property is known as the distributive property.
When you have a variable inside or outside a pair of parentheses, you can multiply the number outside the parentheses to each term inside the parentheses, and the answer will still be the same.
Answer:
write this:
<BAC=x(alternate segment theorem)
<ABC=x
triangle ABC has 2 equal angles so it is an isosceles triangle.
Area of triangle = 1/2 x base x height
base = 15 + 6 = 21
height = 8
Area of triangle = 1/2 x 21 x 8 = 84 in²
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Answer: Area = 84 in²
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Well from what I understand about the question, it's asking if there only needs to be 1, how many can there be. so 9