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algol [13]
3 years ago
13

1. The pollution level in the center of a city at 6 am is 30 parts per million and it

Mathematics
1 answer:
Nady [450]3 years ago
8 0

Answer:

a) y(t) = 30 + 25t

b) The pollution level at 4 o'clock in the afternoon​ is of 280 parts per million.

Step-by-step explanation:

The pollution level in the center of a city at 6 am is 30 parts per million and it grows in linear fashion by 25 parts per million every hour.

This means that the pollution in t hours after 6 am is given by:

y(t) = 30 + 25t, which is the answer to question a.

b. The pollution level at 4 o'clock in the afternoon​

4 in the afternoon is 10 hours after 6 am, so this is y(10).

y(10) = 30 + 25*10 = 30 + 250 = 280

The pollution level at 4 o'clock in the afternoon​ is of 280 parts per million.

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What represents 200 million<br>​
sattari [20]

Answer:

200 million represents a very large number and therefore it is not commonly encountered in the history of the people of God. However, is reflected in the number of silver coins annually paid by the vinedressers who farmed King Solomon's vineyards (ie, 1,000 x 1,000 x 200).

4 0
3 years ago
Solve for the given variable:<br><br> A = P (1 + rt) for t
stepan [7]

A = P(1+rt)

A = P + Prt

A - P = Prt

(A - P)/Pr = t

So the answer is:

t = \frac{A-P}{Pr}

4 0
4 years ago
Solve 2x2 = 8x - 3, what are the solutions?
iragen [17]

Answer:

x=\frac{3}{4}

Step-by-step explanation:

5 0
3 years ago
Give the function for f(x)-5|x+1|+3 for what values of x is f(x)=-12
Lyrx [107]
I’m not sure whether there is a typo in the function but I might have the answer.

If f(x) = 5(x+1)+3 = -12 then you can solve for x.

5(x+1)+3 = -12
5x + 5 + 3 = -12 << expand the brackets
5x + 5 = - 15 << minus 3
x + 1 = -3 << divide everything by 5
x = -4 << minus 1

I don’t know if this helps x Sorry
3 0
3 years ago
The result of which expression will best estimate the actual product of (Negative four-fifths) (three-fifths) (Negative StartFra
Natasha_Volkova [10]

Answer:

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Step-by-step explanation:

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3/5 is closest to 1/2

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5/6 is closest to 1

hope this helps

7 0
3 years ago
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