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nekit [7.7K]
3 years ago
5

An environmental study of a certain community suggests that t years from now, the average level of carbon monoxide in the air wi

ll be Q(t)=0.05t^2 + 0.1t + 3.4 parts per million. By approximately how much will the carbon monoxide lvel change during the coming 6 months?
Mathematics
1 answer:
icang [17]3 years ago
7 0

Answer:

3.4625

Step-by-step explanation:

Given the equation:

Q(t)=0.05t^2 + 0.1t + 3.4 parts per million

Where t = time in years

By approximately how much will the carbon monoxide lvel change during the coming 6 months?

t = 6 months = 6/12 = 0.5 year

Q(0.5) = 0.05(0.5)^2 + 0.1(0.5) + 3.4 parts per million

Q(0.5) = 0.05(0.25) + 0.05 + 3.4

Q(0.5) = 0.0125 + 0.05 + 3.4

Q = 3.4625

Carbon monoxide level will change by approximately 3.4625 parts per million in 6 months

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Answer:

A

Step-by-step explanation:

Discriminant= 8^2-4(16)(1)

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7 0
3 years ago
How do I do this?? Help!
Shkiper50 [21]

Hi there!

In order to use the elimination method, you have to create one variable that has the same coefficient. This is to be able to eliminate one variable and have a one variable equation (which you can then solve).

In your case, we'll have the "x" have the same coefficient by multiplying the top equation by 4 and the bottom equation by 2 :

4( -2x + 3y = -4) → -8x + 12y = -16

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Now that both of your equation have a variable with the same coefficient, you need to choose rather you need to add or subtract the equations in order to get rid of the variable (in this case we want to get rid of the "x").

In your case, you want to add both equation together which will give you :

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Now that you only have one variable, all you need to do now is solve the equation for "y" :

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Divide each side of the equation by 8

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There you go! I really hope this helped, if there's anything just let me know! :)


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3 years ago
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2 years ago
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I do not no what times to get to 16 and i can not ask my mom or dad or grandma or nobody becase they are working and i do not kn
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Step-by-step explanation:

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Move x and y terms to one side.

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