Mathematics: Tickets to a school play cost $2 if bought in advance and $3 at the door. by selling all 400 tickets, $1030 was collected. first write, then solve the equation(s) to find out how many tickets were sold in advance.

Tickets to a school play cost $2 if bought in

Ответ:

topangabraith

06.01.2022

Mathematics

170 tickets.

Step-by-step explanation:

Write formulas for the question.

N_2+N_3=400

2N_2+3N_3=1030

Then use substitution.

N_2=-N_3+400

2(-N_3+400)+3N_3=1030

-2N_3+800+3N_3=1030

N_3=230

So number of $3 tickets sold is 230. But they ask for the tickets bought in advance (i.e. the tickets sold for $2). Use substitution again.

$N_2+230=400\\N_2=400-230\\N_2=170$

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Ответ:

amberwithnell12512

31.03.2022

Mathematics

First find how much the sum of interior angles measure:

180(n-2)

(n is the number of sides)

180 (5 - 2)
180 (3)
540

Now add all the angles and set them equal to 540.

87 + 105 + 135 + 92 + x = 540
419 + x = 540
x = 121

Hope this helps :)

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Tickets to a school play cost $2 if bought in advance and $3 at the door. by selling all 400 tickets, $1030 was collected. first write, then solve the equation(s) to find out how many tickets were sold in advance.

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