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3 years ago

An exponential growth function represents a quantity that has an increasing doubling time true or false

1 answer:

4 0

I think it's the other way around. A quantity that doubles for each additional unit of time is an exponential growth function. An example would be

kt
N = N 2
o

where k is the "growth constant."

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A train leaves San Diego at 1:00 pm. A second train leaves the same city in the same direction at 3:00 pm. The second train trav

Soloha48 [4]

Answer:

The speed of the first train is 45 mph and the speed of the second train is 75 mph

Step-by-step explanation:

Let x represent the speed of the first train in mph. Since the second train, is 30 mph faster then the first, therefore the speed of the second train is (x + 30).

The first train leaves at 1:00 pm, therefore at 6:00 pm, the time taken is 5 hours. Therefore the distance covered by the first train at 6:00 pm = x mph * 5 hours = 5x miles

The second train leaves at 3:00 pm, therefore at 6:00 pm, the time taken is 3 hours. Therefore the distance covered by the second train at 6:00 pm = (x + 30) mph * 3 hours = (3x + 90) miles

Since the second train overtakes the first at 6:00 pm, hence:

3x + 90 = 5x

2x = 90

x = 45

Therefore the speed of the first train is 45 mph and the speed of the second train is 75 mph (45 mph + 30 mph).

7 0

3 years ago

Which of the following expenses is not a variable cost?

Sindrei [870]

It’s rent because variables are related to the sales volume of your business

4 0

2 years ago

Read 2 more answers

How do I completely factor 4x^2-64?

Salsk061 [2.6K]

4x^2 - 64

= 4(x + 4) (x - 4)

4 0

2 years ago

Read 2 more answers

The population of North Carolina in 2010 was 9,535,483 people. The population of South Carolina in 2010 was 4,625,364 people.

Sati [7]

a) North Carolina has 4,910,119 more people than South Carolina

b) the population of North Carolina is 2.06 times larger than that of South Carolina

Step-by-step explanation:

Here the question is asking "how much larger is the population of North Carolina than South Carolina". This means that we have to compare the absolute value of the population of North Carolina with the population of South Caroline.

We have:

NC = 9,535,483 is the population of North Carolina

SC = 4,625,364 is the population of South Carolina

In order two compare the two, we have to calculated the difference between NC and SC. Plugging into a calculator, we get:

$NC-SC=9,535,483-4,625,34=4,910,119$

So, North Carolina has 4,910,119 more people than South Carolina.

In this question, we are asked "how many times larger is North Carolina’s population than South Carolina’s population". This is equivalent to ask what is the ratio between the population of North Carolina to that of South Carolina.

As we said before, we have:

NC = 9,535,483 is the population of North Carolina

SC = 4,625,364 is the population of South Carolina

And by calculating the ratio, we find:

$\frac{NC}{SC}=\frac{9,535,483}{4,625,364}=2.06$

So, the population of North Carolina is 2.06 times larger than that of South Carolina.

#LearnwithBrainly

5 0

2 years ago

Read 2 more answers

What’s the answer to #9???

kodGreya [7K]

Answer:

-2

Step-by-step explanation:

4 0

3 years ago