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melisa1 [442]
3 years ago
9

J scored 80% on a test. He missed 4 problems. How many problems were on the test?

Mathematics
2 answers:
Maslowich3 years ago
8 0
He had 20 questions to answer hope it helps
mojhsa [17]3 years ago
7 0
He had 20 or more problems on the test but if u estimated it would be 19 but if i were u i would put down 20
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\text{The formula of a perimeter of a rectangle:}\\\\P=2(w+l)\\\\\text{we have}\\w:l=3:2\to w=\dfrac{3}{2}l,\ P=55\ cm\\\\\text{substitute}\\\\55=2\left(\dfrac{3}{2}l+l\right)\\\\55=2\cdot\left(\dfrac{3}{2}l+\dfrac{2}{2}l\right)\\\\55=2\cdot\dfrac{5}{2}l\\\\55=5l\ \ \ \ \ |:5\\\\l=11\ cm\\\\w=\dfrac{3}{2}\cdot11=\dfrac{33}{2}=16.5\ cm\\\\Answer:\ b.\ 11\ cm,\ 11\ cm,\ 16.5\ cm,\ 16.5\ cm

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