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Lelu [443]
3 years ago
14

The original price of a DVD was 12. The price was reduced by 18% . What is the new price of the dvd.

Mathematics
1 answer:
Oksana_A [137]3 years ago
3 0

$9.84 will be the new price

Explanation

1-0.18=0.82.

0.82 • 12 = 9.84

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3 years ago
Barnes and noble bookstore ordered 800 books. On verifying the order only 160 books were actually received. The percent of oderi
Snezhnost [94]
Namely, if 800 is the 100%, what is 160 in percentage of it?

\bf \begin{array}{ccllll}
amount&\%\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
800&100\\
160&x
\end{array}\implies \cfrac{800}{160}=\cfrac{100}{x}

solve for "x"
8 0
3 years ago
What is the sum of a geometric sequence 1, 3, 9, ... if there are 12 terms?
attashe74 [19]
We know that
a1=1
a2=3
a3=9
a2/a1=3/1----> 3
a3/a2=9/3----> 3
<span>common ration r is equal to 3
number of terms n  is 12

The </span><span>Sum of geometric series is given by the formula
</span>Sum=a1*[1-r<span>^n]/[1-r]
</span>Sum=1*[1-3^12]/[1-3]-----> Sum=[1-3^12]/[1-3]----> [3^12-1]/[3-1]
<span>Sum=531440/2-----> 265720

the answer is
265720



</span>
4 0
4 years ago
Dmitri recorded 9 8/9 minutes of video of his trip. He wanted to divide the video into 3 equal parts. How many minutes is each p
navik [9.2K]

Wellll, its going to come out as 3.2962962963. But you can always round it to 3.30.

Hope this helped

7 0
4 years ago
Read 2 more answers
Perform the indicated operation to write given polynomial in standard form: (2x^3 − 6x^2 − 7x − 2) +(x^3 +x^2 +6x − 12)
Kipish [7]

Answer:

\left(2x^3-6x^2-7x-2\right)+\left(x^3+x^2+6x-12\right)=3x^3-5x^2-x-14

Step-by-step explanation:

To add the polynomials

Remove parentheses:

\left(2x^3-6x^2-7x-2\right)+\left(x^3+x^2+6x-12\right)=2x^3-6x^2-7x-2+x^3+x^2+6x-12

Group like terms:

=2x^3+x^3-6x^2+x^2-7x+6x-2-12

Add similar elements:

=3x^3-6x^2+x^2-7x+6x-2-12\\=3x^3-5x^2-7x+6x-2-12\\=3x^3-5x^2-x-2-12\\=3x^3-5x^2-x-14

The Standard Form for writing down a polynomial is to put the terms with the highest degree first,its term of 2nd highest is 2nd etc..

In our case the standard form is  

\left(2x^3-6x^2-7x-2\right)+\left(x^3+x^2+6x-12\right)=3x^3-5x^2-x-14

3 0
3 years ago
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