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Gekata [30.6K]
3 years ago
10

10 faces and 12 vertices,how many edges does it have?

Mathematics
1 answer:
MArishka [77]3 years ago
6 0
The answer is 12 edges :)
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Create a quadratic trinomial with zeros equal to 4 and 5
Ilya [14]

Answer:

x^2 - 9x + 20

Step-by-step explanation:

(x - 4)(x - 5) (have to do the opposite for it to be positive)

FOIL method: X x X = x^2

-5 x X = -5x

-4 x X = -4x

x^2 - 5x - 4x + 20

-5 - 4 = -9 so...

x^2 - 9x +20 is the answer

5 0
3 years ago
A college bookstore marks up the price that it pays the publisher for a book by 35 %. If the selling price of a book is $ 87.00
Dimas [21]

Answer:the amount that the bookstore pay the publisher for the book is $64.4

Step-by-step explanation:

Let x represent the amount that the bookstore pay the publisher for the book.

The college bookstore marks up the price that it pays the publisher for a book by 35%. This means that the value of the mark up would be

35/100 × x = 0.35 × x = 0.35x

Therefore, the amount that the bookstore is selling the book would be

x + 0.35x = 1.35x

If the selling price of a book is $ 87.00, then it means that

1.35x = 87

x = 87/1.35 = 64.4

7 0
3 years ago
Simplify the expression and explain each step 8+(7+x)
Darina [25.2K]

Answer:

15 + x (Guess)

Step-by-step explanation:

Simply ignore the x, and do 8 + 5.

Then, do 15 + x.


6 0
3 years ago
Read 2 more answers
Will give brainliest
Alborosie
<span>C:1/2 hope i help have a nice day
</span>
5 0
3 years ago
Read 2 more answers
Write an equation of a line that is parallel to the given line.
Marina CMI [18]

Answer:

5) y=5

6)x=7

7)a=18

Step-by-step explanation:

5) y= any number will work. don't add a variable like x

6)x= any number will work. don't add a variable

My work for 7 is in the picture. If you'd like me to explain more for 7 lmk :)

6 0
3 years ago
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