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kobusy [5.1K]
2 years ago
14

Evaluate the expression when a=−15 and b=−5.

Mathematics
1 answer:
andre [41]2 years ago
4 0
(-5)^2=25

    25
-------------
-15 + - 5


25
------
-20
=-1.25
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Step-by-step explanation:

There is a mistype in the question. It should say: ... <em>si cada uno de ellos hicieron una contribución de </em><em>dieciseis</em><em> pesos...</em>

So if everybody contributes $14, they make a total of 14*x, where x denotes the number of students. In this scenario, $4 are left, calling y to the cost of the trip, then:

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In the other scenario, everybody contributes $16 and $6 are in excess, so

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