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Mrrafil [7]
3 years ago
14

PLEASE HELP WITH THIS QUESTION. WILL MARK BRAINLIEST! 5 STAR RATING+ THANKS!

Mathematics
1 answer:
OLEGan [10]3 years ago
3 0
This is exactly what i said on the other post

all possible roots:

+-1 , +-1/2, +-2, +-4, +- 5, +- 5/2, +- 10, and +- 20

put in order 

+-1/2, +-1 , +-2, +-5/2, +-4, +- 5, , +- 10, and +- 20


answer is 

C. +-1/2, +-1 , +-2, +-5/2, +-4, +- 5, , +- 10, and +- 20

and 

C. 3 solutions


... i also solved on the other post..

solutions: -5/2, -2  and 2

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The correct answer is x= -9. Hope this helps!!
8 0
3 years ago
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Solve the following system of equations. Express your answer as an ordered pair in the format (a,
choli [55]
The second equation is <span>-5-2y=2, then
</span>
<span>-2y=2-(-5),
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The first equation is 2x+5y=16, subtitude y=-3.5 in this equation, then
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8 0
3 years ago
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Let X be the temperature in at which a certain chemical reaction takes place, and let Y be the temperature in (so Y = 1.8X + 32)
Black_prince [1.1K]

Answer:

See explanation

Step-by-step explanation:

Solution:-

The random variable, Y be the temperature of chemical reaction in degree fahrenheit be a linear expression of a random variable X : The  temperature in at which a certain chemical reaction takes place.

                             Y = 1.8*X + 32

- The median of the random variate "X" is given to be equal to "η". We can mathematically express it as:

                             P ( X ≤ η ) = 0.5

- Then the median of "Y" distribution can be expressed with the help of the relation given:

                             P ( Y ≤ 1.8*η + 32 )

- The left hand side of the inequality can be replaced by the linear relation:

                             P ( 1.8*X + 32 ≤ 1.8*η + 32 )

                             P ( 1.8*X ≤ 1.8*η )   ..... Cancel "1.8" on both sides.

                            P ( X ≤ η ) = 0.5 ...... Proven

Hence,

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b)

- Recall that the definition of proportion (p) of distribution that lie within the 90th percentile. It can be mathematically expressed as the probability of random variate "X" at 90th percentile :

                             P ( X ≤ p_.9 ) = 0.9 ..... 90th percentile

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          P ( Y ≤ 1.8*p_0.9 + 32 ) = P ( 1.8*X + 32 ≤ 1.8*p_0.9 + 32 )

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                                                 = P ( X  ≤ p_0.9 )

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                            Y = aX + b

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                                                 = P ( X  ≥ p_% )

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4 0
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vladimir2022 [97]

Answer:

Hello! Your answer would be, A)F(x)=2x^2-8x-42

Step-by-step explanation:

Hope I helped! Brainiest plz!♥ Have a nice afternoon. Hope you make a 100%! -Amelia

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