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OpenStudy (anonymous):
Sam is laying out patio stones in a triangular pattern. The first row has 2 stones and each row has 2 additional stones, as shown below. How many complete rows can he make with a box of 144 stones? Enter a numerical answer. https://courseplayer.avalearning.com/CourseFiles/Questions/100477/27%2022.jpg
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OpenStudy (anonymous):
@MaimiGirl
OpenStudy (anonymous):
srry i'm blank
OpenStudy (anonymous):
@Here_to_Help15
OpenStudy (anonymous):
you can use the Sum of Arithmetic Series...
OpenStudy (here_to_help15):
with 11 rows is needed 132 stones for 12 rows is needed 156 stones
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OpenStudy (anonymous):
yeah |dw:1406826374930:dw|
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