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3 years ago

You read online that a 15 ft by 20 ft brick patio would cost about $2,275 to have professionally installed.

Mathematics

2 answers:

Ivanshal [37]3 years ago

7 0

Answer:

4140

Step-by-step explanation:

when u multiply the measurements for the first one you get 300 and the second measurement you get 546 then u put it in the ratio form

If 300= 2,275

546=x

then you cross multiply

irina1246 [14]3 years ago

5 0

Answer:

Step-by-step explanation:

yes

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poizon [28]

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Wewaii [24]

Answer:

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Step-by-step explanation:

For this case we assume the following model:

$A(t)= 23.1 e^{0.0152 t}$

Where t is the number of years after 2000/

Part a

For this case we want the population for 2000 and on this case the value of t=0 since we have 0 years after 2000. If we rpelace into the model we got:

$A(t=0)= 23.1 e^{0.0152(0)}=23.1e^0 =23.1$

So then the initial population at year 2000 is 23.1 million of people.

Part b

For this case we want to find the time t whn the population is 28.3 million.

So we need to solve this equation:

$28.3= 23.1 e^{0.0152(t)}$

We can divide both sides by 23.1 and we got:

$\frac{28.3}{23.1}= e^{0.0152t}$

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$ln(\frac{28.3}{23.1})= 0.0152 t$

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$t = \frac{ln(\frac{28.3}{23.1})}{0.0152}=13.357 years$

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Answer:

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