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OverLord2011 [107]
3 years ago
9

Pals helpppp

Mathematics
1 answer:
ryzh [129]3 years ago
8 0

Answer:

x =17

Step-by-step explanation:

(11x -26) + (− 4x+ 87) =180

7x + 61 =180

7x = 119

x =17

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Karmen returned a bicycle to Earl's Bike Shop. The sales receipt showed a total paid price of $211.86, including the 7% sales ta
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Answer:

$198

Step-by-step explanation:

198x.07=13.86

198+13.86=211.86

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3 years ago
1. Multiply: (3x - 6)(2x + 7)
kati45 [8]
A. the answer is 6x^2+9x-42
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Solve equation, check for extraneous solutions
fiasKO [112]

Start with

1=\dfrac{1}{n^2}+\dfrac{n^2-4n-5}{3n^2}

We observe that both fractions are not defined if n=0. So, we will assume n \neq 0.

We multiply both numerator and denominator of the first fraction by 3 and we sum the two fractions:

1=\dfrac{3}{3n^2}+\dfrac{n^2-4n-5}{3n^2} = \dfrac{n^2-4n-2}{3n^2}

We multiply both sides by 3n^2:

n^2-4n-2=3n^2

We move everything to one side and solve the quadratic equation:

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We check the solution:

1=\dfrac{1}{1}+\dfrac{1+4-5}{3} \iff 1 = 1+0

which is true

8 0
3 years ago
At a school book fair, 3/5 of the books are nonfiction books. of the nonfiction books, 1/4 are animal books. what fraction of th
bulgar [2K]

Answer:

Animal books make up (3/20) of all books

Step-by-step explanation:

Let X be the total number of books, made up of nonfiction, animal, and all others.

(3/5)X are nonfiction books.

Of the nonfiction books, 1/4 are animal books:  (3/5)*(1/4)X = (3/20)X are animal books

[This means that Nonfiction, less animal books is:  (3/5)X - (3/20)X]

Animal books make up (3/20) of all books.

5 0
1 year ago
I need Serious help here!
marishachu [46]

Answer:

Step-by-step explanation:

0.5

7 0
2 years ago
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