3 years ago

What equation that represents 13 subtracted from a number w is 15.

Mathematics

1 answer:

coldgirl [10]3 years ago

8 0

Answer:

Step-by-step explanation:

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Population Growth The population P (in thousands) of Oriando,Florida from 1980 through 2009 can be modeled by p = 130e0.0205t,wh

svetoff [14.1K]

Answer: a) 236,000.

b) 2021

Step-by-step explanation:

Given : Population Growth The population P (in thousands) of Oriando,Florida from 1980 through 2009 can be modeled by $p = 130e^{0.0205t}$ (1)

where t = 0 corresponds to 1980.

Then , for 2009

t= 2009-1980=29

a. ⇒The population of Phoenix in 2009 = $p = 130e^{0.0205(29)}$

$p = 130e^{0.5945}$

$p =130(1.81212465608)=235.57620529\approx236$

Hence, the population of Orlando in 2009 was about 236,000.

b) Substitute p= 300 in (1) , we get

$300 = 130e^{0.0205t}$

$2.3077= e^{0.0205t}$ (Divide both sides by 130)

Taking Natural log on both sides,

$\ln(2.3077) = 0.0205t\\\\\Rightarrow\ t=\dfrac{\ln(2.3077)}{0.0205}$

$t=\dfrac{0.836251357528}{0.0205}=40.7927491477\approx41$

Hence, The year Orlando will have a population of 300,000 =1980+41 =2021

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3 years ago

How to Solve for x. -1/2 (x + 2) + 1 1/2 x = 3

kondaur [170]

Hope this helps :)))

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2 years ago

Make x the subject of this equation:<br><br> 3x - 5 = y

irakobra [83]

Answer:

Step-by-step explanation:

x+ y+5/3 hope this helps

6 0

2 years ago

sarah worked out for 15 today. she plans to add 5 min per week. write qnd equation to represent how many minutes she will be wor

garik1379 [7]

Answer:

I think its 15 + 5x

Step-by-step explanation:

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2 years ago

Wewaii [24]

Answer:

1. 648

2. 81

Step-by-step explanation:

6 * 6 * 6 * 3 = 648

3 * 3 * 3 * 3 = 81

5 0

3 years ago