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slavikrds [6]
3 years ago
11

the poetry club has 129 members. There are 15 more girls than boys in the poetry club. How many boys are in the poetry club?

Mathematics
2 answers:
Aleksandr [31]3 years ago
5 0

The correct answer is 72.

qwelly [4]3 years ago
4 0

Answer:

The answer is 57 boys.

Step-by-step explanation:

So we need to craft an equation. We know the members, that will be our output. And we also know that there are 15 more girls. so, we will create the equation below.

A+A+15=129

A represents the boys.

So you need to merge the A's because they are the same varible.

2A+15=129

Subtract 15 from both sides.

2A=114

Now you need to divide both sides by 2

A=57 boys

And yeah, that's how you solve using equations. Simple and fairly easy for these types of problems. Hope this helps!

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3 years ago
Which of the following expressions is correct? Select one: a. marginal cost = (change in quantity of output)/(change in total co
Natasha_Volkova [10]

Answer:

b. average total cost = total cost/quantity of output

Step-by-step explanation:

The marginal cost is the additional cost of producing one more unit of output and it can be calculated by taking the change in total cost and dividing it by the change in quantity, its formula is:

  • <em>Marginal cost = change in total cost/ change in quantity</em>

The average total cost (sometimes referred to simply as average cost) is total cost divided by the quantity of output, its formula is:

  • <u><em>Average total cost = total cost / quantity of output</em></u>

The total cost is obtained adding together the fixed costs and the variable costs, its formula is:

  • <em>Total cost = fixed cost + variable cost</em>

The average variable cost is obtained when variable cost is divided by quantity of output, its formula is:

  • <em>Average variable = variable cost / quantity of output</em>

I hope you find this information useful and interesting! Good luck!

3 0
3 years ago
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Step-by-step explanation:

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