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3 years ago

.Heights (in cm) of 10 students in a class are given bellow

Mathematics

2 answers:

vodomira [7]3 years ago

8 0

Answer:

mean = adding all/ 10

mode = 125 because it is repeating most of the time

ch4aika [34]3 years ago

3 0

the calculation is given in the picture,please see it

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(GEOMETRY 100 POINTS)

Karo-lina-s [1.5K]

Answer:

1) They are similar

2) 45 ft

Step-by-step explanation:

1) similar because both triangles have congruent interior angles

2) 75/35 = AB/21

AB = 45 ft

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3 years ago

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PLEASE HELP WILL GIVE BRAINLIEST 5 STARS AND A THANKS DUE IN 1 HOUR AND A HALF!!

Hunter-Best [27]

Answer: 2.3 / -3

Step-by-step explanation: If you want me to to explain it, just ask!

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2 years ago

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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

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

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

The <em>integrating factor </em>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

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

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3 years ago

Boats from all along the Atlantic coast dock at a busy marina. Of the first 10 boats to dock at the marina one day, 5 were from

yuradex [85]

Answer:

Step-by-step explanation:

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3 years ago

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B. No, because it fails the vertical line test.

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