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svet-max [94.6K]

3 years ago

9

The number of students that participated in sports last year was 100. This year there are 140 students participating in sports.

What is the percent of increase in the number of students participating in sports from last year to this year? __________%

1 answer:

Leni [432]3 years ago

8 0

Answer: 40%

Step-by-step explanation:

HOPE THIS HELPS ^^

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$(6)(2)-(6)(7x)+(x)(7x)-(x)(2)=0\\\\12-42x+7x^2-2x=0\\\\7x^2-44x+12=0\\\\7x^2-42x-2x+12=0\\\\7x(x-6)-2(x-6)=0\\\\(x-6)(7x-2)=0\iff x-6=0\ \vee\ 7x-2=0\\\\x-6=0\ \ \ |+6\\\\x=6\\\\7x-2=0\ \ \ |+2\\\\7x=2\ \ \ |:7\\\\x=\dfrac{2}{7}$

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