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25 March, 22:54

the interior angles of a Pentagon are (y+13°), (y+15°), (y+23°), (y+29°), and (y+40°) a. Find the value of y b. Find the value of each interior angles

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  1. 26 March, 00:52
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    y=84

    first : 84+13=97

    second : 84+15=99

    third : 84+23=107

    fourth: 84+29=113

    fifth : 84+40 = 124

    97+99+107+113+124 = 540

    Step-by-step explanation:

    sum of interior angles of a pentagon=540 degreas

    y+13+y+15+y+23+y+29+y+40=540

    5y=540 - (13+15+23+29+40)

    y=84

    first : 84+13=97

    second : 84+15=99

    third : 84+23=107

    fourth: 84+29=113

    fifth : 84+40 = 124

    97+99+107+113+124 = 540
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