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Alexxandr [17]
3 years ago
9

Find the value of two numbers if their sum is 23 and their difference is 3.

Mathematics
1 answer:
Yakvenalex [24]3 years ago
3 0

x+y=23

x-y=5

First, add the equations.

2x=28

x=14

Then...

14+y=23

y=9

Therefore the answer is...

x=14  y=9

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At high school basketball game, the athletic department sold 250 tickets and brought in 837.50. Adult tickets cost $5 and studen
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Answer:

The system of equations is:

a+s = 250\\5a+2.50s = 837.50

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Step-by-step explanation:

We will use the given statements to make a system of equations for the given scenario.

First of all we have to decide which variables to be used.

Let a be the number of adult tickets and

Let s be the number of student tickets

So according to the statement that the department sold 250 tickets in total, the equation will be:

a+s = 250

This is equation one of the system of equations

According to the statement that cost of adult ticket is $5, total cost of adult tickets will be: 5a

According to the statement that cost of student ticket is $2.50, total cost of student tickets will be:2.50s

The total earning was $837.50 so the second equation will be:

5a+2.50s = 837.50

Hence,

The system of equations is:

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