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devlian [24]
3 years ago
11

Please help and show work!

Mathematics
1 answer:
Lilit [14]3 years ago
3 0

Answer:

Step-by-step explanation:

The given quadratic must be rewritten in standard form before anything else is done:  -2x^2 + 8x - 8 = 0.  The coefficients of the x terms are {-2, 8, -8}.

The discriminant b^2 - 4ac is therefore (8)^2 - 4(-2)(-8), or  64 -  64, or 0.

A zero discriminant points to two real, equal solutions.

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Please help this is for math....
Gnesinka [82]
So here you want to show all values greater than the parabola shown. The following parabola can be found by looking at the x intercepts. Here you have x=-3 and x=2. So your parabola can be defined as y=(x+3)(x-2) because when you make those two equal to zero you get x=-3 and x=2. And so then you go ahead and do the FOIL method for both of them when you multiply and you get

y=x²-2x+3x-6 which is

y=x²+x-6

Because the parabola is shaded above, it indicates that all the values greater than y are shaded and it’s with a solid line, therefore your answer for this inequality would be choice B. I hope this helps!!
7 0
3 years ago
I need this asap please
Sergeeva-Olga [200]
i think c might be the right answer
6 0
3 years ago
Correct or no???????????,,
DochEvi [55]
Yes, I checked your addition with a calculator and 3965 + 5657 = 9622.
I am assuming that distance = frequent-flier points.

Good luck and hope this helps! :)
4 0
3 years ago
Read 2 more answers
Wavelength varies inversely with frequency. Let k be the product of wavelength and frequency. Complete
Alex Ar [27]

Answer:

A=670

B=301,600

C=560

Step-by-step explanation:

A is K divided by the wavelength (m) 301,500 / 450

B is wavelength(m) multiplied by the Frequency (Thz) 520x580

C is K divided by the Frenquency (Thz) 302400 / 540

4 0
3 years ago
Read 2 more answers
Help me with this geometey question !! thanks!​
Reptile [31]

Answer:

A=542

Step-by-step explanation:

none, sorry

6 0
3 years ago
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