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lora16 [44]
2 years ago
10

Dan sold 40 concert tickets in 5 days.

Mathematics
1 answer:
olchik [2.2K]2 years ago
7 0

Step-by-step explanation:

The number of tickets sold by Dan the first day is x.

Tickets sold on the 2nd day: x+3

on the 3rd day: x+6

on the 4th day: x+9

on the 5th: x+12

Since the total of tickets sold by Dan is 40:

x+(x+3)+(x+6)+(x+9)+(x+12)=40

5x+30=40

5x=10

x=2

number of tickets sold on the third day: 8

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Virty [35]

Answer:

The solutions for the equation are:

(4,-2) and (-16,-17)

Step-by-step explanation:

Given equation:

3x-4y-8=12

Given points:

(0,-5), (4,-2), (8,2), (-16,-17), (-1,-8), (-40,-34)

We will check each point by plugging it in the given equation and see if it satisfies the equation or not.

(0,5)

3(0)-4(5)-8=12

0-20-8=12

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which is not true. Hence, not a solution.

(4,-2)

3(4)-4(-2)-8=12

12+8-8=12

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which is true. Hence, it is a solution.

(8,2)

3(8)-4(2)-8=12

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24-16=12

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which is not true. Hence, not a solution.

(-16,-17)

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12=12

which is true. Hence, it is a solution.

(-1,-8)

3(-1)-4(-8)-8=12

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