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16 September, 04:32

The measure of one angle is eleven more than four times a number another angle is twice the first angles measure the sum of the measures of the angles are 195 degrees what is the measure of each angle

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Answers (2)
  1. 16 September, 04:45
    0
    X, y, and z are the angles

    so

    x is 11 more than 4 times y

    x=11+4y

    z is twice the first angles measure

    z=2x

    the sum of the angles is 195

    x+y+z=195

    so we have

    x=11+4y

    z=2x

    and

    x+y+z=195

    make everything y

    subsitute 11+4y for x

    11+4y+y+z=195

    subsitute 2x for z

    11+4y+y+2x=195

    subsitute 11+4y for x

    11+4y+y+2 (11+4y) = 195

    distribute

    11+4y+y+22+8y=195

    group according to type

    (4y+y+8y) + (11+22) = 195

    add like terms

    13y+33=195

    subtract 33 from both sides

    13y=162

    divide both sides by 13

    y=12 and 8/13

    subsitute

    x=11+4y

    x=11+4 (12 and 6/13)

    x=11+48 and 24/13

    x=11+49 and 11/13

    x=60 and 11/13

    z=2x

    z=2 (60 and 11/13)

    z=120 and 22/13

    z=121 and 9/13

    the angles are

    12 and 6/13

    60 and 11/13

    121 and 9/13 or aprox

    12.46

    60.85

    121.69
  2. 16 September, 04:54
    0
    Answer=65° & 130°

    195°=angle1+angle2

    195° = (11+4x) + 2 (11+4x)

    195°=33+12x

    subtract 33 for both sides

    162=12x

    13.5=x

    Now lets solve for the measure of the angles

    angle1=11+4x

    angle1=11+4 (13.5)

    angle1=11+54

    angle1=65°

    angle2=2 (11+4x)

    angle2=2 (11+4 (33.5))

    angle2=2 (11+54)

    angle2=2 (65)

    angle2=130°
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