Yong teaches students with learning disabilities and physical disabilities. Barb teaches computer programming to high school stu
2 answers:
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Answer:
They were 10 friend
Explanation:
We can construct the equation system as follows:
we can solve for the number of friend by using subtritution:
we get a quadratic formula we solve for the positive root
f = 10
We know check if the root is correct:
800 / 10 = 80
800 / (10 - 2) = 100