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icang [17]
2 years ago
9

1) In your own words, explain when (-3)n is positive and when it is negative.​

Mathematics
1 answer:
inessss [21]2 years ago
6 0
-3n is negative when the value of n is positive. When the value of n is negative, the value of -3n is positive. Remember that when multiplying a positive and a negative, the product will be negative. If you are multiplying two numbers with the same sign, the product will be positive.
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At the city museum, child admission is $6.10 and adult admission is $9.90. On Friday, 142 tickets were sold for a total sales of
antoniya [11.8K]

Answer:

no of child tickets sold were 58

Step-by-step explanation:

Let the number of child ticket sold be x

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Thus,

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total sales of ticket  = Total cost of x child ticket + Total cost of x a dult ticket

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in this equation substituting x = 142 - y from equation 1

6.10(142 - y )  + 9.90y = 1185.40

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=> 3.80y = 1185.40 - 866.2

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=> y = 319.2/3.80 = 84

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Answer:

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