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3 years ago

How many seconds on a day

Mathematics

2 answers:

Murrr4er [49]3 years ago

6 0

Answer:

There are 86,400.

Step-by-step explanation:

This is because there are 60 seconds in one minute. Then you need to times 60 by 60 to see how many seconds there are in a hour. Then you times that by 24 because there are 24 hours and that is your answer. I will show my work below:

60 (how many seconds there are in a minute)

60 (how many minutes there are in a hour)

24 (how many hours there are in a day)

60 x 60 (for the amount of seconds there are in a minute and how many minutes in a hour). Which 60 x 60 = 3600

Then, take that seconds in a hour and times it by 24 because there isn't 1 hour in a day, and it isnt asking how many seconds are in a hour, it is asking how many seconds there are in a DAY.

3600 x 24 = 86400

So, there are 86,400 seconds in one day! :D

Good luck on your test!

geniusboy [140]3 years ago

3 0

Answer:

86 400

Step-by-step explanation:

Using the conversions

1 minute = 60 seconds

1 hour = 60 minutes

1 day = 24 hours, then

seconds in a day = 60 × 60 × 24 = 86 400

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An advertising company designs a campaign to introduce a new product to a metropolitan area of population 3 Million people. Let

Advocard [28]

Answer:

$P(t)=3,000,000-3,000,000e^{0.0138t}$

Step-by-step explanation:

Since P(t) increases at a rate proportional to the number of people still unaware of the product, we have

$P'(t)=K(3,000,000-P(t))$

Since no one was aware of the product at the beginning of the campaign and 50% of the people were aware of the product after 50 days of advertising

P(0) = 0 and P(50) = 1,500,000

We have and ordinary differential equation of first order that we can write

$P'(t)+KP(t)= 3,000,000K$

The integrating factor is

$e^{Kt}$

Multiplying both sides of the equation by the integrating factor

$e^{Kt}P'(t)+e^{Kt}KP(t)= e^{Kt}3,000,000*K$

Hence

$(e^{Kt}P(t))'=3,000,000Ke^{Kt}$

Integrating both sides

$e^{Kt}P(t)=3,000,000K \int e^{Kt}dt +C$

$e^{Kt}P(t)=3,000,000K(\frac{e^{Kt}}{K})+C$

$P(t)=3,000,000+Ce^{-Kt}$

But P(0) = 0, so C = -3,000,000

and P(50) = 1,500,000

$e^{-50K}=\frac{1}{2}\Rightarrow K=-\frac{log(0.5)}{50}=0.0138$

And the equation that models the number of people (in millions) who become aware of the product by time t is

$P(t)=3,000,000-3,000,000e^{0.0138t}$

5 0

3 years ago

I’m confused on this one

scoray [572]

The general form of slope-intercept form is y=mx+b

m stands for the slope
b stands for the y intercept

They are giving you m so you can replace m with -4/5 ⇒ y=-4/5x+b

Now you just need to find b. They also give you the point (0,-3). This means that when x is 0, y is equal to -3.

Lets go back to y=-4/5x+b and replace x with 0 and y with -3.
⇒ -3=(-4/5)(0) + b
⇒ -3= 0+b
⇒ -3=b
⇒ b=-3

Now that you have m and b, you can find your final answer in the form y=mx+b
⇒ y=-4/5x + (-3)
⇒ y= -4/5x - 3

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3 years ago

What does exlamitory mean

Pachacha [2.7K]

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3 years ago

What is the surface area of the triangular prism? In square feet

vampirchik [111]

Answer:

The surface of the triangular prism is 12 ft

Step-by-step explanation:

To find the surface area you have to multiply the base and the height and divide the product by 2

6 ft= base

4 ft= height

6 x 4 = 24

24 divided by 2 = 12

6 0

3 years ago

Read 2 more answers

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Phoenix [80]

Answer:

Step-by-step explanation:

All we need to do is substitute the y and x. This would then look like:

9y + x =

9 × 7 + x =

9 × 7 + 5.

Can you solve it from here?

6 0

2 years ago