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qaws [65]
4 years ago
13

There are 25 students. Average number of siblings for each student is 3. A new student with 8 siblings joins the class. The aver

age number of siblings that each student has is?
Mathematics
2 answers:
LenKa [72]4 years ago
6 0
3.19

To find average you add then divide by how many.
So, we can reverse because ? divided by 25 = 3 75 would be the mystery number because of the equation above. If you add 8 to 75 then divide by 26 ( new student ) you get 3.19230769
Marrrta [24]4 years ago
3 0

Answer

its actually 4 i just took test put 3 was completely wrong its 4!

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3 years ago
A dog walker charges a flat rate of $6 per walk plus an hourly rate of $30. How much does the dog walker charge for a 45 minute
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Answer:

The function notation is given as:

$6 + $30 × x

f(x) = $6 + 30x

The dog walker charges $28.50

Step-by-step explanation:

Let the hourly rate be represented by x

A dog walker charges a flat rate of $6 per walk plus an hourly rate of $30.

The function notation is given as:

$6 + $30 × x

F(x) = $6 + 30x

How much does the dog walker charge for a 45 minute walk?

We have to convert 45 minutes to 1 hour

60 minutes = 1 hour

45 minutes = x

x = 45/60

x = 3/4(hour)

Putting that in the function notation:

f(x) = $6 + 30x

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$6 + 30(3/4)

$6 + $22.5

= $28.50

Therefore, the dog walker charges $28.50

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