A store sells small notebooks for $6 and large notebooks for $12. If a student buys 6 notebooks and spends $60, how many of
each size did he buy?
He bought __ nothing small notebooks and __ nothing large notebooks.
He bought __ nothing small notebooks and __ nothing large notebooks.
2 answers:
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the sum of the angles in a triangle = 180°, thus
x + x +
x = 180
multiply through by 6
6x + 3x + x = 1080
10x = 1080 ( divide both sides by 10 )
x = 108
the angles are 108°, 54° and 18°
Since all the angles are different and the largest is 108°
The triangle is an obtuse scalene triangle