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castortr0y [4]
4 years ago
8

Find the vertex for the equation: y=-2x^2+16x-31

Mathematics
1 answer:
Nutka1998 [239]4 years ago
7 0

Answer:

Vertex is (4,1)

Step-by-step explanation:

x=-b/2a so you need to first divide the b (second term) by the a (first term) so you should get 1 as your new a and -8 as your new b. Negative (-8) is just 8 then divide that by 2(1) which is just 2 which equals 4. That is your x. To find your y, you plug your x back into the original equation and then solve it. Hope this helps!

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klemol [59]

Answer:

idk

Step-by-step explanation:

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7 0
3 years ago
A Web music store offers two versions of a popular song. The size of the standard version is 2.2
motikmotik

Answer:

There were 160 downloads of the high-quality version

Step-by-step explanation:

The way to get the answer is to divide 720 by 4.5 and you get your answer or you could have don it the long way by multiplying by any number to get to your answer.

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3 years ago
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pishuonlain [190]

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Step-by-step explanation:

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6 0
3 years ago
Which expression below is an equivalent expression to: (13n^4+12n^3-3+8n^2)+(-11n^2-n^3)
Lubov Fominskaja [6]

Answer:

-13n^4 + 11n^3 - 3n^2 - 3

Step-by-step explanation:

*I think you mistyped the question. I belive the 13n^4 is supposed to be negative*


1.First, we need to add common values (all the n^4s together, all the n^3s, etc.) from the two sets.

-13n^4

12n^3 + -n^3

8n^2 + -11n^2

-3

2. Now lets simplify

-13n^4

11n^3

-3n^2

-3

3. Laststly, we put them all into one expression!

-13n^4 + 11n^3 - 3n^2 - 3

5 0
4 years ago
Identify the value of x and the length of each chord. HELP ASAP!!
Sphinxa [80]

Answer:

First option

x = 9.1, AB  = 16.5, CD = 14.1

Step-by-step explanation:

5 * x = 13 * 3.5

5x = 45.5

x = 9.1

AB = 3.5 + 13 = 16.5

CD = 5 + 9.1 = 14.1

6 0
3 years ago
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