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Gnoma [55]
3 years ago
10

Cheryl pays $69 for 6 DVDs.  

Mathematics
2 answers:
yanalaym [24]3 years ago
7 0
$69 ÷ 6 = 11.5 per DVD
11.5 × 4 = 46
Thepotemich [5.8K]3 years ago
4 0
Just divide 69 by 6.... then multiply by 4 after  to get the total amount 4 cd's would cost
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F(x) = 7 - 5x + 7x2<br> find f(-9)
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Answer:

Step-by-step explanation:

F(x) = 7 - 5x + 7x²

f(-9) = 7 - 5*(-9) + 7*(-9)²

       = 7 + 45 + 7*81

      = 7 + 45 + 567

      = 619

7 0
3 years ago
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Is a function that is not continuous
stepan [7]

It appears that your answer contains either a link or inappropriate words. Please correct and submit again!

Answer:

See below. The answer is incomplete, I couldn't post it.

Step-by-step explanation:

Considering a function f, it is said to be discontinuous when it has a hole or breaks, it means places where f(x) cannot be evaluated. For example, when the denominator equals to 0, it is not defined.

5 0
3 years ago
Two students have partially simplified the same expression. Audrey's work: ( x3y−2 22x−5y3 ) 3 = ( x8y−5 22 ) 3 = x24y−15 26 Dav
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Answer:

<h3>-<u>Aubrey first applied division of like bases by subtracting the exponents.</u></h3><h3>-<u>Next David will apply the quotient of powers.</u></h3><h3><u>-Aubrey's work is correct .</u></h3><h3><u>-The correct simplified answer is x^24/64y^15</u></h3>
4 0
3 years ago
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Solve x + 3y = 9. 3x – 3y = –13
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&#10;x=9-3y&#10; &#10;  |Subtract \ 3y \ from \ both \ sides| 

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x-y= \dfrac{13}{3}   |Divide \ both \ sides \ by \ 3|

x=- \dfrac{13}{3}+y  |Add \ y \ to \ both \ sides|

x=y- \dfrac{13}{3}  |Regroup \ terms|

7 0
3 years ago
- x is at least - 4 but no more than 3.
anyanavicka [17]

Answer:

- 4 \leqslant  - x \leqslant 3  \\  4 \geqslant x \geqslant  - 3

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3 years ago
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