Evaluate. Be smart, <br>(2.31∙5.82+4.18∙2.31+90∙2.31)÷2.31∙0.55

In a certain town, 30% of the people are Conservatives; 50% Socialists; and 20% Liberals. In this town at the last election, 65%

quester [9]

Answer:

In A Certain City, 30 Percent Of The People Are Conservatives 50 Percent Are Liberals, And 20 Percent Are Independents. Records Show That In A Particular Election, 65 Percent Of The Conservatives Voted, 82 Percent Of The Liberals Voted, And 50 Percent Of The Independents Voted. (This City Must Be In Canada!) If A Person In The City Is Selected

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Step-by-step explanation:

3 0

3 years ago

What is the intermediate step in the form (x + a)? = b as a result of completing the

Mrac [35]

Answer:

(x + 9)² = 36

Step-by-step explanation:

Given

x² + 18x + 57 = 12 ( subtract 57 from both sides )

x² + 18x = - 45

To complete the square

add ( half the coefficient of the x- term)² to both sides

x² + 2(9)x + 81 = - 45 + 81

(x + 9)² = 36

5 0

3 years ago

Suppose that a cylinder has a radius of r units, and that the height of the cylinder is also r units. The lateral area of the cy

horrorfan [7]

Answer:

r = 7.33 units

Step-by-step explanation:

Given that,

A cylinder has a radius of r units, and that the height of the cylinder is also r units.

The lateral area of the cylinder is 338 square units.

We need to find the value of r.

The formula for the lateral area of the cylinder is given by :

$A=2\pi rh$

Put all the values,

$2\pi r^2=338\\\\r=\sqrt{\dfrac{338}{2\pi}} \\\\r=7.33\ unit$

So, the value of r is equal to 7.33 units.

6 0

3 years ago

85% of the people survey thought the price of the car wash was reasonable. If 164 people thought the cost of the car wash was re

8090 [49]

192 people were survey

Step-by-step explanation:

The given is:

85% of the people survey thought the price of the car wash was reasonable
164 people thought the cost of the car wash was reasonable

We need to find how many people were survey

Assume that x people were survey

∵ There were x people survey

∵ 85% of them thought the price of the car wash was reasonable

∴ The number of the people who thought the price of the car wash

was reasonable = 85% × x

∵ 85% = $\frac{85}{100}$ = 0.85

∴ The number of the people who thought the price of the car wash

was reasonable = 0.85 x

∵ 164 people thought the cost of the car wash was reasonable

- Equate 0.85 x and 164

∴ 0.85 x = 164

- Divide both sides by 0.85

∴ x = 192.94

∵ x represents a number of people, then it must be integer

∴ The number of people were survey = 192

192 people were survey

Learn more:

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7 0

3 years ago

Find the linear regression equation for the transformed data. x=1,2,3,4,5 y=13,19,37,91,253 log y=1.114,1.279,1.568,1.959,2,403

Talja [164]

Answer:

The answer is OPTION (D)log(y)=0.326x+0.687

<h2>Linear regression:</h2>

It is a linear model, e.g. a model that assumes a linear relationship between the input variables (x) and the single output variable (y)

The Linear regression equation for the transformed data:

We transform the predictor (x) values only. We transform the response (y) values only. We transform both the predictor (x) values and response (y) values.

(1, 13) 1.114

(2, 19) 1.279

(3, 37) 1.568

(4, 91) 1.959

(5, 253) 2.403

X Y Log(y)

1 13 1.114

2 19 1.740

3 37 2.543

4 91 3.381

5 253 4.226

Sum of X = 15

Sum of Y = 8.323

Mean X = 3

Mean Y = 1.6646

Sum of squares (SSX) = 10

Sum of products (SP) = 3.258

Regression Equation = ŷ = bX + a

b = SP/SSX = 3.26/10 = 0.3258

a = MY - bMX = 1.66 - (0.33*3) = 0.6872

ŷ = 0.3258X + 0.6872

The graph is plotted below:

The linear regression equation is log(y)=0.326x+0.687

Learn more about Linear regression equation here:

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6 0

2 years ago

Evaluate. Be smart, (2.31∙5.82+4.18∙2.31+90∙2.31)÷2.31∙0.55