James and lin got married and got new jobs. lin earns $3100 more per year than james. together they earn $81,980. how much does each of them earn per year?
cu = 117
since the triangles are similar then the ratios of corresponding sides are equal, that is
substituting in values to the ratios
= ( cross- multiply )
24(36x - 1) = 3432 ( divide both sides by 24 )
36x - 1 = 143 ( add 1 to both sides )
36x = 144 ( divide both sides by 36 )
x = 4
cu = 36x - 1 - 26 = (36 × 4) - 27 = 144 - 27 = 117
= 18 1/2 : 2/3
= 37/2 : 2/3
= 37/2 * 3/2
= 27 3/4 inches
once you know the sum of the interior angles in a polygon it is easy to find the measure of one interior angle if the polygon is regular: all sides are congruent and all angles are congruent. just divide the sum of the angles by the number of sides.
the interior angle of a polygon is one of the angles on the inside.