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Elza [17]
3 years ago
8

Sylvia took three times in a video game she scored -120 points during her first turn 320 points in her second time and -80 point

s during her third what was her average score for the three turns
Mathematics
1 answer:
sp2606 [1]3 years ago
3 0
Her average score for the 3 turns is 40 because you have to add all of the scores so -80 and -120 is -200 so add that to 320 and you get 120 divide that by 3 because she took 3 turns and you get 40
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Answer:

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Step-by-step explanation:

We are given the following in the question:

The completion of a chemical reaction is expressed by the equation

y = 300 - 4x -x^2

where y is  the number of seconds needed to complete the reaction and x is the temperature in degrees Celsius  at which the reaction occurs.

We have to find the temperature at which the reaction occurs, if the completion time of reaction is 160 seconds.

Putting y = 160

160 = 300 - 4x -x^2\\x^2 + 4x  - 140 = 0\\x^2 + 14x -10x -140 = 0\\x(x+14)-10(x+14)=0\\(x-10)(x+14) = 0\\(x-10) =0, (x+14) =0\\x = 10, x = -14

Thus, the reaction ca occur at 10 degree Celsius or -14 degree Celsius.

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andre [41]

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<h3>What is reflection?</h3>

A reflection point is created when a figure is constructed around a single point known as the point of reflection or the figure's centre. There is an exact opposite point on the other side of each point in the figure. Under the point of reflection, the figure's size and shape are unaltered.

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Therefore, the coordinates of the vertices after a reflection across the Y-axis are P (-8, 2)  Q (-2, 6)  R (-2, 0)

To know more about reflection, visit:

brainly.com/question/26642069

#SPJ9

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