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Rashid [163]
2 years ago
9

Why must a scientist keep a complete record of an experiment?

Mathematics
1 answer:
Musya8 [376]2 years ago
3 0
Because if he don’t he wouldn’t keep track on a invention he has made
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Which of the following is how we find slope from a graph?
stellarik [79]

Answer:

m= rise/ run

Step-by-step explanation:

We can find the slope by

m= rise/ run

 = change in y/ change in x

 = ( y2-y1)/(x2-x1)

  = vertical change/ horizontal change

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The easiest way to do this is to reflect Figure I over the Y axis. Then move it up 3 and left 2.

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Can someone please help me on this problem.
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Your answer should be 101°. 52+53+154= 259. 360-259= 101. Hope that helps
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2 years ago
A construction crew built
Leona [35]

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4 miles in 1 day

Step-by-step explanation: Multiply 8 by the numerator for how many miles of road; That is how many halves of miles are built in a single day. Simplify that and they build 4 miles of road a day.

4 0
3 years ago
Show all work below to answer the following for a certain city that had a population of 150,000 in the year 2010. In 2020, the p
Gelneren [198K]

The constant rate of continuous growth, k, for this population is equal to 2.11935%. And the population  will reach 250,000 people in 24.36 years.

For solving this question, you should apply the Population Growth Equation.

<h3>Population Growth Equation</h3>

The formula for the Population Growth Equation is:

      P_f=P_o*(1+\frac{R}{100} )^t        

Pf= future population

Po=initial population

r=growth rate

t= time (years)

STEP 1 - Find the constant rate of continuous growth, k, for this population.

For this exercise, you have:

Pf= future population= 185,000 in 2020.

Po=initial population =150,000 in 2010.

r=growth rate= ?

t= time (years)=2020-2010=10

Then,

P_f=P_o*(1+\frac{R}{100} )^t\\ \\ 185000=150000\cdot \left(1+\frac{R}{100}\:\right)^{10}\\ \\ \left(1+\frac{R}{100}\right)^{10}=\frac{185000}{150000} \\ \\ \left(1+\frac{R}{100}\right)^{10}=\frac{37}{30}\\ \\ R=100\sqrt[10]{\frac{37}{30}}-100=2.11935\%

STEP 2 - Find the <em>t</em>  for population 250,000 people.

P_f=P_o*(1+\frac{R}{100} )^t\\ \\ 250000=150000\cdot \left(1+\frac{2.11935}{100}\:\right)^{10}\\ \\ \left(1+\frac{2.11935}{100}\right)^{10}=\frac{250000}{150000} \\ \\ \left(1+\frac{2.11935}{100}\right)^t=\frac{5}{3}\\ \\ t\ln \left(1+\frac{2.11935}{100}\right)=\ln \left(\frac{5}{3}\right)\\ \\ t=\frac{\ln \left(\frac{5}{3}\right)}{\ln \left(\frac{102.11935}{100}\right)}\\ \\ t=24.36

Read more about the population growth equation here:

brainly.com/question/25630111

7 0
2 years ago
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