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3 years ago

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Mathematics

1 answer:

Vikentia [17]3 years ago

7 0

Answer:

3x^2 + 3 --> 6, 15, 30, 51

2x^2 - 1 --> 1, 7, 17, 31

x^2 + 2 --> 3, 6, 11, 18

Step-by-step explanation:

Let's start with the first equation; 3x^2 + 3

Substitute 1 (the first digit in a sequence) for x.

3(1^2) + 3

3(1) + 3

3 + 3 = 6

3(2^2) + 3 Then the second digit.

3(4) + 3

12 + 3 = 15

Since the two numbers we have so far are 6 and 15, there is only one sequence this could match. 6, 15, 30, 51.

2(1^2) - 1

2(1) - 1

2 - 1 = 1

This equation represents 1, 7, 17, 31.

These same steps apply to the other equation as well.

1^2 + 2, then 2^2 + 2, then 2^2 + 2, and so on. (But we don't need to do extra work to figure that out.)

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3 years ago

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Eva8 [605]

Answer:

612 adults

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Step-by-step explanation:

To solve this question, set two equations:

Let x be number of adults and y be number of students.

As there are in total 937 people, the equation would be the sum of both adults and children:

$x+y=937$

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Therefore there are 612 adults and 361 students.

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3 years ago

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