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ivann1987 [24]
3 years ago
7

30 points !!!! :)) please help thanksss

Mathematics
1 answer:
Doss [256]3 years ago
7 0

Answer:

A = 10⁰

Step-by-step explanation:

We have 2.247 and this to represented as $ 2 \times A + 2 \times B + 4 \times C + 7 \times D $

$ 2.247 = \frac{2247}{1000} $

$ 2.247 = 2 \times 10^0 + 2 \times \frac{1}{10} + 4 \times \frac{1}{10^2} + 7 \times \frac{1}{10^3} $

Comparing with the given data, we have:

A = 10⁰

B = $ \frac{1}{10} $

C = $ \frac{1}{10^2} $

D = $ \frac{1}{10^3} $

Hence the answer A = 10⁰.

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Consider the following table.
kobusy [5.1K]

Answer:

The function for the model that gives the pressure in atm is given as:

P = 1.000 + 0.030*D

Step-by-step explanation:

From the question, we are given the Depth with corresponding P. Our duty is to calculate the Pressure (P) in the atm given the Depth (D). From this, we know that:

1. Pressure (P) is the dependent variable, and

2. Depth (D) is the independent variable.

Hence the function is a linear relationship which is known as regression equation. This can be achieve by estimating the:

i) Slope (β), and

ii) Intercept (α).

We can obtain the slope by:

\beta = \frac{n\sum(P)\sum(D) -  \sum{PD}}{n\sum{D}^2 - (\sum{D})^2}, and

\alpha = \frac{\sum{P}}{n} - \beta \frac{\sum{D}}{n}.

Hence, the function is:

\hat{P} = α + β D

You can achieve the task through R programming. Here is the R code.

#... this code in R programming

D = c(0,33,66,99,132)

P = c(1,2,3,4,5)

mod = lm(P~D)

mod.

############################

And we obtained P = 1.000 + 0.030 D

7 0
4 years ago
Friday’s high temperature was −1°C. The low temperature was −5°C. What was the difference between the high and low temperatures?
Digiron [165]

Answer:

-4C

Step-by-step explanation:

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4 0
3 years ago
Help pls i dont understand how to do this :')
andriy [413]

Answer:

7/8

Step-by-step explanation:

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( \sin(x) ) {}^{2}  + ( \cos(x) ) {}^{2}  = 1

Plug in

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for cos x.

(\sin(x) ) {}^{2}  + ( \frac{ \sqrt{15} }{8} ) {}^{2}  = 1

( \sin(x) ) {}^{2}  +  \frac{15}{64}  = 1

( \sin(x) ) {}^{2}  =  \frac{49}{64}

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3 0
2 years ago
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dybincka [34]

Answer:

153

Step-by-step explanation:

3 0
3 years ago
O
Neko [114]

Answer:

I'm not smart but I think 7.5

6 0
3 years ago
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