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Eduardwww [97]
4 years ago
7

A teacher pays $39 for 10 books.What is the unit price of each book?

Mathematics
2 answers:
zheka24 [161]4 years ago
8 0

To find the cost of each book, you need to divide the money spent on all of the books by the number of books.


$39 / 10 = $3.90 per book

natulia [17]4 years ago
5 0
The Answer is $3.9 because if you divide 39 into 10, the answer is 3.9
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Using the Distance Formula, find the distance between points (-1, -7) and (-3,-5) to the nearest tenth.
MrMuchimi

Answer:

The answer is

<h2>2.8</h2>

Step-by-step explanation:

The distance between two points can be found by using the formula

d =  \sqrt{ ({x1 - x2})^{2} +  ({y1 - y2})^{2}  }  \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-1, -7) and (-3,-5)

The distance between them is

d =  \sqrt{ ({ - 1 + 3})^{2}  +  ({ - 7 + 5})^{2} }  \\  =  \sqrt{ {  2}^{2}  + ( { - 2})^{2} }  \\  =  \sqrt{4 + 4}  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   \\  =  \sqrt{8}  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \\   = 2 \sqrt{2}  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   \\  = 2.8284271247

We have the final answer as

<h3>2.8 units to the nearest tenth</h3>

Hope this helps you

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3 years ago
PLS HELP!!!!! One multiple choice question! Will give brainliest!
Vaselesa [24]
B I think not sure Hope this helps!!!!
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3 years ago
In Ms. Monroe's 2nd Period class, 5 students made an A
Neporo4naja [7]

Answer:

yes

Step-by-step explanation: yes

6 0
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What is 90,175,087,309 in expanded form
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Word form:
<span>ninety billion, one hundred seventy-five million, eighty-seven thousand, three hundred nine

Number form: view attachment</span>

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3 years ago
A 3
Andrew [12]

Answer:

There are (63) combinations. The notation means "six choose three". Out of six items (flavors) choose three.

(nk)=n!k!(n−k)!.

(63)=6!3!3!.

Think of it this way. There are 6 ways to choose a flavor. Once you choose, there are 5 ways to choose the next. After that, there are 4 flavors left. which is 6!/3!=6⋅5⋅4⋅3⋅2⋅13⋅2⋅1=6⋅5⋅4=120.

But, you could have chosen {chocolate,vanilla,strawberry} and you get the same combination as {vanilla, strawberry, chocolate} so we have to divide by 3!=3⋅2⋅1=6 to account for the order of choosing.

So the number of combinations of flavors is (63)=1206=20.

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3 years ago
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