The correct answer is: [A]: "69° <span>" .
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m∠1 = 69° .
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Explanation:
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180 - (39 + 30) = 180 - 69 = 111. This is the measurement of the third angle in the triangle. Note that all angles in a triangle add up to 180° . All triangles have 3 (three) sides and 3 (three) angles.
To find m∠1 :
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The only single angle that exists that is supplementary to ∠1 is 69.
So: m∠1 = 180 - 111 = 69 . (Note: since all angles on a straight line are supplementary angles; and supplementary angles add up to 180° .
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The answer is: 69° .
m∠1 = 69° .
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Answer:
x = 41 , y = 139
Step-by-step explanation:
x and 41° are alternate exterior angles and are congruent , so
x = 41
x and y are a linear pair and sum to 180° , that is
x + y = 180
41 + y = 180 ( subtract 41 from both sides )
y = 139
Answer:
x = 8
Step-by-step explanation:
4(x+1.5)=38
Distribute the 4
4x +6 = 38
Subtract 6 from each side
4x+6-6 = 38-6
4x = 32
Divide each side by 4
4x/4 = 32/4
x = 8
69 is the answer the equation would go as: 2(3.14)(11)=69.08
