Write an expression with with (-1) as its base that will produce a positive product, and explain why your answer
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Answer:
where x = number of adults
y = number of children
and the extra weights of 4kg of each person.
As the exercise says, the triangles are similar. So, we can set up proportions between correspondent sides.
In order to solve for x we can set up the proportion between the horizontal and vertical sides:
Solving this proportion for x implies
Now you can solve for m and p using the pythagorean theorem, because both triangles are right:
Then, we know that the hypothenuse of the big triangle is m+p, so we have
which implies