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Elenna [48]
3 years ago
8

4. A study of air quality in a particular city by an environmental group suggest that t years from now the level of carbon monox

ide, in parts per million , in the air will be A=0.2t^2+.01t+5.1.
4a. What is the current level of Carbon Monoxide, in part per million?
4b. How many years from now will the level of carbon monoxide be at 8 parts per million? Round to the nearest tenth.
Mathematics
1 answer:
sp2606 [1]3 years ago
3 0

Answer:

4A=5.1 per million 4B=3.8 years

Step-by-step explanation:

4A. A=0.2^2+.01t+5.1 the current level would be 5.1

4B. 8=.2t^2+.01+5.1 minus 8  .2t^2+.01-2.9

t=(-1.0+squ.0001-41-.58)/.4

t=(-.01+squ2.3201)/.4

t=3.78  t+3.78=0 =-3.78

t=-3.83 t-3.83=0 =3.83

Answer 3.83 years

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Answer:

Option C. No solution is the right answer.

Step-by-step explanation:

Here the given equations are y = x²+2x+3 -----(1)

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x²+3 = 2x-2

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3 0
3 years ago
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The difference of two numbers is 33. The sum of the first number and four times the second number is -2. What is the larger of t
defon

Answer:

The larger of the two is 44.67

Step-by-step explanation:

let the first number=x

let the second number=y

We can derive a system of equations using the mathematical statements

Their sum is 33:

x+y=33( call this equation 1)

Sum of first number and four times the second is -2:

x+4y=-2(call this equation 2)

Since the integer coefficients of x in both equations are the same we can quickly subtract one from the other to eliminate it

For this explanation, I choose to subtract equation 1 from 2

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Now plug in the value of y into any equation for that of x. Say we plug into equation 1

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4 years ago
The dimensions of a triangular prism are shown in the diagram. What is the
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Answer:

D

Step-by-step explanation:

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SA = 1132

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3 years ago
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