2x to the second power + 2 + 9x to the second power

2 answers:

7 0

2x² + 2 + 9x²

= 11x² + 2

(If you have to solve for x then write the following: )

11x² + 2 = 0

11x² = -2

x² = (-2 / 11)

x = √(-2 / 11)

____ [38]3 years ago

4 0

Answer:

11x^2+2

Step-by-step explanation:

you put the 9x^2 beside 2x^2 because they are both x^2 then the 2 will stay the same

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denis23 [38]

Answer:

(b) 67

Step-by-step explanation:

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where the decay factor is the fraction of change during 1 unit of time period t.

Here, the initial difference of 100-25 = 75 degrees decays to 90-25 = 65 degrees in 1 minute. So, the units of t are minutes, the decay factor is 65/75, the initial difference is 75 degrees, and the final temperature is 25 degrees. That lets us write the equation as ...

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