MATHEMATICS MIDDLE SCHOOL

The library sells 376 books at its annual used-book sale. The sale takes in a total of $2119. Children's books cost $4, and adult books cost $7.Let x = number of children's books sold, and let y = the number of adult books sold.

Which system of equations can the librarians use to model this situation?

Answers

Answer 1

Answer:

Answer:

system of equations are

$x+y=376$

$4x+7y=2119$

Step-by-step explanation:

Let x = number of children's books sold,

and let y = the number of adult books sold

The library sells 376 books at its annual used-book sale

so, we get equation as

$x+y=376$

Children's books cost $4

So, total cost of children book is 4x

adult books cost $7

So, total cost of adult book is 7y

so, we get total cost is 4x+7y

he sale takes in a total of $2119

so, we get equation as

$4x+7y=2119$

so,

system of equations are

$x+y=376$

$4x+7y=2119$

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Answers

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Answers

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What is 5 5/7-5 2/7 please help fast

Answers

Your answer is 3/7 because you have to go 5-5=0 and 5/7-2/7=3/7 so it is 3/7

Answer:

3/7

Step-by-step explanation:

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The ratio of adults and children attending a new exhibit one day at the museum was found to be 7:3 based on this ratio of 370 people attend that day how many were children.

Answers

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Which is bigger 6 liters or 6,500 millimiters

Answers

1 liter = 1000 milliliter
6 liters = 6000 milliliters < 6500 milliliters
Accordingly, 6 liters is less than 6500 milliliters

first of all i am pretty sure that you meant milliliters.
second of all the answer is 6,500 milliliters is bigger than 6 liters
one liter = 1,000 milliliters
so 6 liters = 6,000 milliliters
i hope i helped

The equation y = 55x + 85 describes the amount of money a plumber charges, where y is the total amount he charges and x is the number of hours he works. The table shows the total amount of money an electrician charges.How much does each charge per hour?

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Total amount charged 115 180 310 505

the plummer charges $___ per hour
the electrician charges $___ per hour

Answers

If you would like to know how much does each charge per hour, you can calculate this using the following steps:

x ... the number of hours
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The correct result would be: the plumber charges $140 per hour and the electrician charges $115 per hour.

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