Find the measure of angle x in the figure below: A:35 B:48 C:69 D:78
1 answer:
The best way to solve for x is to first solve for y and then subtract values. The top of "line" of the 3 angles togethers add up to 180 degrees. So from this, you can deduct this equation into 
. To solve for y, subtract 
and 
from the left hand side and rights hand side of the equation. now you know the value is 
. So the value of y is 69 degrees.
Now you know two angles of a triangle and the sum of the angles in a triangle is 180 degrees. So the equation is
. To solve for x, subtract 
from both sides. 
. So you know that 
degrees.
Now you know two angles of a triangle and the sum of the angles in a triangle is 180 degrees. So the equation is
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given: a=-1, b=2, c=
=(
-1
=
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Fraction to Decimal:
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Equation=-2.5-1=-3.5
OR Common Denominator:
=
×
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which also = to -3.5
given: a=-1, b=2, c=
=(
=
=
=
to continue, we can either find a common denominator or change the fraction to decimal.
Fraction to Decimal:
Equation=-2.5-1=-3.5
OR Common Denominator:
=
=
=
which also = to -3.5