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Lemur [1.5K]
3 years ago
6

Simplify the expression: 4(5 - n) + 10n ​

Mathematics
1 answer:
irinina [24]3 years ago
3 0

Answer: 6n+20

<u>Distribute</u>

<u></u>(4)(5)+(4)(-n)+10n\\20+-4n+10n<u></u>

<u></u>

<u>Combine Like Terms</u>

<u></u>20+-4n+10n\\(-4n+10n)+(20)\\6n+20<u></u>

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kow [346]

Answer:

A. 35.69%

B. 62.77%

Step-by-step explanation:

In this case, what we must do is calculate the probability supported with the data in the table.

Part A.

What is the probability that a randomly selected student is a 7th grader?

Here the total is all the students that would be the sum of all the grades, which are 325 students.

the number of 7th graders is 116, so the probability is:

116/325 = 0.3569

that is, 35.69%

Part B: What percentage of the students interviewed play Video games?

The total number of students is the same 325 and of those 204 play video games, therefore:

204/325 = 0.6277

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3 years ago
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Step-by-step explanation:

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3 years ago
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

6 0
3 years ago
Helpp!!! This is due Sunday. I don’t understand!
Darya [45]

Answer:

11, 15, 26, 41, could be an answer


6 0
3 years ago
Which of the following represents the graph of f(x) = 2x + 2?
Wittaler [7]
Did u type the equation wrong none of these graphs match I believe the intercept would be 2
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3 years ago
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