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3 years ago

FIRST PERSON TO ANSWER CORRECTLY GETS BRAINLIEST, PLEASE HELP!

Mathematics

1 answer:

sergeinik [125]3 years ago

8 0

Answer:

D) 9.5

Step-by-step explanation:

substitute 4.5 for x

y = 2 (4.5) + 0.5

y = 9 + 0.5

y = 9.5

hope this helps :)

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The quotient of y and 2 is greater than -21

mamaluj [8]

$y\div2 > -21\\\\\dfrac{y}{2} > -21\ \ \ \ |\cdot2\\\\y > -42\to y\in(-42,\ \infty)$

5 0

4 years ago

Alan, David and Sam 8019 bottle caps each . how many bottle caps did they collect altogether

Jobisdone [24]

This may be wrong, but from my math:

if you divide 8019 by 3 ,
you end up with 2,703.

So altogether they collected 2,703 bottle caps total.

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3 years ago

The correlation coefficient between two quantitative variables is approximately 0.6. What does the value of this correlation coe

murzikaleks [220]

Answer:

The model does not fits the data well.

Step-by-step explanation:

Correlation:

Correlation is a technique that help us to find or define a relationship between two variables.

It is a measure of linear relationship between two quantities.

A positive correlation means that an increase in one quantity leads to an increase in another quantity
A negative correlation means with increase in one quantity the other quantity decreases.

R-square, $R^2$

The quantity R-squared is an indicator of the predictive power of a model.
It explains the variation in the dependent variable due to independent variable.
It shows how well the model fits the data.
R-squared is also known as the coefficient of determination.

$R^2 = \text{(Correlation coefficient)}^2= (0.6)^2 = 0.36 = 36\%$

Therefore, only 36% of the variations in the dependent variable is explained by the independent variable in the model which means more than 50% of variation cannot still be explained in the dependent variable.

Hence, the model does not fits the data well.

8 0

4 years ago

La distancia entre la tierra y el sol es de 1,5 . 10˄8 km, la distancia entre la Tierra y Júpiter es de 9,3 . 10˄8 km y Neptuno

Sonbull [250]

A) La distancia del Sol a Neptuno en notación científica es 45 x 10^8 km.

B) Júpiter se encuentra a 930.000.000 kilómetros del Sol.

C) La distancia del Sol a Neptuno es 30 veces mayor que la que hay a la Tierra.

Dado que la distancia entre la tierra y el sol es de 1,5 . 10˄8 km, la distancia entre la Tierra y Júpiter es de 9,3 . 10˄8 km y Neptuno está situado a 4.500.000.000 Km del Sol, para determinar:

A) Expresa en notación científica la distancia del sol a Neptuno

B) Calcula la distancia a la que está situado Júpiter respecto al Sol

C) Calcula cuantas veces es mayor la distancia del Sol a Neptuno que la que hay a la Tierra.

Deben realizarse los siguientes cálculos:

A) 4.500.000.000 = 45 x 100.000.000
100.000.000 = 10^8
4.500.000 = 45 x 10^8

B) 9.3 x 10^8 = X
100.000.000 = 10^8
9.3 x 100.000.000 = X
930.000.000 = X

C) Tierra = 150.000.000
Neptuno = 4.500.000.000
150 = 1
4.500 = X
4500 / 150 = X
30 = X

Aprende más en brainly.com/question/1705769

8 0

3 years ago

3.A rectangular block of plasticine

iogann1982 [59]

Answer:

Step-by-step explanation:

569565+56*5*

4 0

3 years ago