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26 April, 22:17

Solve for y. Enter your answer in the box. An equilateral triangle A B C. Side B C is the base. Sides A B, B C, and A C are equal. Sides A B, B C, and A C are labeled with single tick marks. Angle A is labeled as left parenthesis 5 y plus 10 right parenthesis degrees, and angle C is labeled as left parenthesis 6 x plus 6 right parenthesis degrees.

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  1. 26 April, 22:39
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    y = 10

    Step-by-step explanation:

    By definition, the internal angles of an equilateral triangle are all 60. So:

    A = 5y + 10 = 60

    5y + 10 = 60

    5y + 10 - 10 = 60 - 10

    5y = 50

    5y/5 = 50/5

    y = 10
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