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marysya [2.9K]
3 years ago
10

A total of 679 tickets were sold for the school play. they were either adult tickets or student tickets. there were 71 fewer stu

dent tickets sold than adult tickets. how many adult tickets were sold?
Mathematics
1 answer:
guapka [62]3 years ago
3 0
For example a stands for the number of adult tickets, and s stands for the number of student tickets.

Write a system of equation based on the problem
An equation for "<span>A total of 679 tickets were sold for the school play"
</span>∴ a + s = 679 <em>(first equation)</em>
An equation for "<span>there were 71 fewer student tickets sold than adult tickets"
</span>∴ s = a - 71 <em>(second equation)</em>
<span>
Find the solution of the system
Subtitute s with a - 71 in the first equation to find the value of a
a + s = 679
a + a - 71 = 679
2a - 71 = 679
2a = 679 + 71
2a = 750
  a = 750/2
  a = 375
The number of adult tickets sold is 375</span>
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A rectangular field measures 400m by 900m, what is the perimeter of the field:
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Answer:

a) 1790 b) 1.79

Step-by-step explanation:

a) you just add to get the perimiter 2(900) + 2(400) to get 1790

b) 1000 meters makes a kilometer so we divide by 1000 and get 1.79 for the kilometers

6 0
3 years ago
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Please help! I am so confused
levacccp [35]

Answer:

The second option, y + 2x = 10, is the correct answer for this problem.

Step-by-step explanation:

There are many different ways to solve this problem.  I am going to pick a point represented in the table and plug its values into the given equations to find the correct response.

From the table, we can conclude that the point (0,10) must satisfy the equation.  This means that if we plug in 0 for x and 10 for y into the equations below, we should get a true statement.

y - 2x = 14

10 - 2(0) = 14

10 = 14

Since 10 is not equal to 14, we know that the first option is incorrect.

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10 + 2(0) = 10

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Therefore, the second option may be our answer, but we should make sure the other options are incorrect.

2y + x = 23

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20 = 23

Since 20 is not equal to 23, we know that the third option is incorrect.

y + x = 11

10 + 0 = 11

Since 10 is not equal to 11, we know that the fourth option is also incorrect.

Since the second option is the only answer that yielded a true statement when a point from the table was plugged in, we can conclude that the second option (y + 2x = 10) is the answer.  If you wanted to make sure, you could plug in each of the points represented in the table and confirm that they too make the equation true.

Hope this helps!

8 0
3 years ago
Need an answer thanks
RUDIKE [14]
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38=(3x+4)+(5x-6)
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divide by 3
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Find BC:
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8 0
4 years ago
In triangle ABC, which side is the longest if these are the measures of the angles? m∠A = 60°, m∠B = (3x − 2)°, m∠C = (2x + 7)°
gogolik [260]

Answer:

AC

Step-by-step explanation:

First, let's find m∠B and m∠C by solving for x. Since the sum of interior angles in a triangle is 180°, we know that:

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3 years ago
PLEASE HELP ME!!!
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Answer:

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i hope this helps u pls give a brainliest and a thx look at the comments below as well pls ;)

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