Find the sum of 0.5 and -0.5., №17886393, 27.08.2020 03:32

Mathematics

Find the sum of 0.5 and -0.5.

Step-by-step answer

P Answered by PhD

2

Amswer

The answer is 0

Mathematics

PGCPS ALGEBRA 1 CR (SUMMER 2021) 793023 Solve the equation Use the equation solver to find the value of x that makes the mathematical statement true. 1. For parentheses: Distribute O 0.5 0Bx93 94-03-17 63x93 126-17 • 17x 17x O 0.5 2 If necessary Combine Terms O 0.87 O 1.5 23 Bx9326 -93 -93 2388 - 119 • 238 • 238 2. Apply properties: Add Subtract Multiply Divide 05 To start over Reset You have solved the equation Show Me (1) Intro ✓ Done Previous Activity 1 of 10

Step-by-step answer

P Answered by Specialist

See explanation

Step-by-step explanation:

The texts in the question is distorted and unclear; So, I will provide a general explanation of solving an equation with 1 variable.

A similar question that can be found online is:

8x - 8 = 4x + 12 --- to solve for x

First, collect all like terms

8x - 4x = 8 + 12

Distribute the expression on the left-hand side

x(8 - 4) = 8 + 12

x * 4 = 8 + 12

Simplify like terms

x * 4 = 20

Divide both sides by 4

x = 5

Mathematics

PLEASE I need to understand these, I have tried but I really don t get it, if someone could give me at least the answer that would be amazing ♡ 1) the national honor society is selling tickets for the spring dance, tickets are 12$ for couples and 8$ for singles. Let x be the number of couples and y be the number of singles. This system of equations represents the situation in which ticket sales totaled $1,580 and a total of 250 students attended the dance: 12x + 8y = 1,580 2x + y = 250 How many single tickets were sold? - 14 - 40 - 105 - 133 2)

Step-by-step answer

P Answered by Master

if I help you will you help me

Step-by-step explanation:

Mathematics

PLEASE I need to understand these, I have tried but I really don t get it, if someone could give me at least the answer that would be amazing ♡ 1) the national honor society is selling tickets for the spring dance, tickets are 12$ for couples and 8$ for singles. Let x be the number of couples and y be the number of singles. This system of equations represents the situation in which ticket sales totaled $1,580 and a total of 250 students attended the dance: 12x + 8y = 1,580 2x + y = 250 How many single tickets were sold? - 14 - 40 - 105 - 133 2)

Step-by-step answer

P Answered by Master

if I help you will you help me

Step-by-step explanation:

Mathematics

Do the levels of fear in children change over time? if so, in what ways? very little research has been done on the prevalence and persistence of fears in children. researchers surveyed a group of third and fourth grade children and asked them to rate their level of fear about a variety of situations. after two years the children again completed the same survey. the researchers calculated the mean fear rating for each child in both years and were interested in the relation between these ratings. the least-squares regression line for the data, with

Step-by-step answer

P Answered by Master

5

Hello there.

Do the levels of fear in children change over time? If so, in what ways? Very little research has been done on the prevalence and persistence of fears in children. Researchers surveyed a group of third and fourth grade children and asked them to rate their level of fear about a variety of situations. After two years the children again completed the same survey. The researchers calculated the mean fear rating for each child in both years and were interested in the relation between these ratings. The least-squares regression line for the data, with 89 mean fear ratings as the explanatory variable and 91 mean fear ratings as the response variable, is given below.

Dependent variable is 91 means

R squared = 27.4%

S = 0.2374 with 94 ? 2 = 92 degrees of freedom
Variable Coefficient s.e. of coefficient t-ratio P-value
Constant 0.877917 0.1184 7.42 ¡Ü 0.0001
89 means 0.397911 0.0676 5.89 ¡Ü 0.0001
Approximately what is a 95% confidence interval for the slope of the least squares regression line?

D. (0.33, 0.47)

Mathematics

Do the levels of fear in children change over time? if so, in what ways? very little research has been done on the prevalence and persistence of fears in children. researchers surveyed a group of third and fourth grade children and asked them to rate their level of fear about a variety of situations. after two years the children again completed the same survey. the researchers calculated the mean fear rating for each child in both years and were interested in the relation between these ratings. the least-squares regression line for the data, with

Step-by-step answer

P Answered by Master

5

Hello there.

Do the levels of fear in children change over time? If so, in what ways? Very little research has been done on the prevalence and persistence of fears in children. Researchers surveyed a group of third and fourth grade children and asked them to rate their level of fear about a variety of situations. After two years the children again completed the same survey. The researchers calculated the mean fear rating for each child in both years and were interested in the relation between these ratings. The least-squares regression line for the data, with 89 mean fear ratings as the explanatory variable and 91 mean fear ratings as the response variable, is given below.

Dependent variable is 91 means

R squared = 27.4%

S = 0.2374 with 94 ? 2 = 92 degrees of freedom
Variable Coefficient s.e. of coefficient t-ratio P-value
Constant 0.877917 0.1184 7.42 ¡Ü 0.0001
89 means 0.397911 0.0676 5.89 ¡Ü 0.0001
Approximately what is a 95% confidence interval for the slope of the least squares regression line?

D. (0.33, 0.47)

Mathematics

Find the sum of -0.15 + (-0.85) + 12.5

Step-by-step answer

P Answered by Specialist

4

The answer is 13.5. Click on the photo to see how.
Find the sum of -0.15 + (-0.85) + 12.5

Mathematics

Find the sum of -0.15 + (-0.85) + 12.5

Step-by-step answer

P Answered by Master

4

The answer is 13.5. Click on the photo to see how.
Find the sum of -0.15 + (-0.85) + 12.5

Mathematics

Data on a sample of 100 customers of Alibaba, a direct marketing company, for the current year. The variables are defined as follows: Customer = a code for the customer Own Home = 1 if customer owns home, o if renting Close = 1 if lives close to stores (with similar merchandise), O if not Salary = annual household salary in $ Catalogs = number of catalogs this customer was sent this year Amount Spent = Amount spent total on purchases this year You are given the result of the multiple regression with dependent variable = Amount Spent. Use this output

Step-by-step answer

P Answered by Specialist

a. $\hat{amount} \ \hat{ spent} = -91.67 - (229.47* ownhome)-(604.90 * close) +(0.02216 * salary) + (42.62 * catalogs)$

b. the expected amount spent by Amy is $1144.47

c. the expected amount that Brenda is going to spend is $1749.37

Step-by-step explanation:

(a)

From the regression output; the equation for the regression model can be written as:

$\hat{amount} \ \hat{ spent} = -91.67 - (229.47* ownhome)-(604.90 * close) +(0.02216 * salary) + (42.62 * catalogs)$

From the information given in the question;

(b)

Amy does not own a home but rent; the variables given also stated that ;

Own Home = 1 if customer owns home, 0 if renting

So for Amy ; Own Home = 0 (since it is rented)

Close = Yes(1)

Salary = $60,000

Catalogs = 12

Therefore;

the mean amount spent by Amy is by using the regression model is ;

$\hat{amount} \ \hat{ spent} = -91.67 - (229.47* 0)-(604.90 * 1) +(0.02216 * 60000) + (42.62 * 12)$

$\hat{amount} \ \hat{ spent} = -91.67 -0-604.90 +1329.6 + 511.44$

$\hat{amount} \ \hat{ spent} =1144.47$

Thus; the expected amount spent by Amy is $1144.47

(c)

If Brenda has the same characteristics as Amy but does not live close to store with similar merchandise.

Then the Close for Brenda will be = No (0)

Thus; the amount spent by Brenda will be:

$\hat{amount} \ \hat{ spent} = -91.67 - (229.47* 0)-(604.90 * 0) +(0.02216 * 60000) + (42.62 * 12)$

$\hat{amount} \ \hat{ spent} = -91.67 -0-0 +1329.6 + 511.44$

$\hat{amount} \ \hat{ spent} = 1749.37$

Thus, the expected amount that Brenda is going to spend is $1749.37

Mathematics

Data on a sample of 100 customers of Alibaba, a direct marketing company, for the current year. The variables are defined as follows: Customer = a code for the customer Own Home = 1 if customer owns home, o if renting Close = 1 if lives close to stores (with similar merchandise), O if not Salary = annual household salary in $ Catalogs = number of catalogs this customer was sent this year Amount Spent = Amount spent total on purchases this year You are given the result of the multiple regression with dependent variable = Amount Spent. Use this output

Step-by-step answer

P Answered by Specialist

a. $\hat{amount} \ \hat{ spent} = -91.67 - (229.47* ownhome)-(604.90 * close) +(0.02216 * salary) + (42.62 * catalogs)$

b. the expected amount spent by Amy is $1144.47

c. the expected amount that Brenda is going to spend is $1749.37

Step-by-step explanation:

(a)

From the regression output; the equation for the regression model can be written as:

$\hat{amount} \ \hat{ spent} = -91.67 - (229.47* ownhome)-(604.90 * close) +(0.02216 * salary) + (42.62 * catalogs)$

From the information given in the question;

(b)

Amy does not own a home but rent; the variables given also stated that ;

Own Home = 1 if customer owns home, 0 if renting

So for Amy ; Own Home = 0 (since it is rented)

Close = Yes(1)

Salary = $60,000

Catalogs = 12

Therefore;

the mean amount spent by Amy is by using the regression model is ;

$\hat{amount} \ \hat{ spent} = -91.67 - (229.47* 0)-(604.90 * 1) +(0.02216 * 60000) + (42.62 * 12)$

$\hat{amount} \ \hat{ spent} = -91.67 -0-604.90 +1329.6 + 511.44$

$\hat{amount} \ \hat{ spent} =1144.47$

Thus; the expected amount spent by Amy is $1144.47

(c)

If Brenda has the same characteristics as Amy but does not live close to store with similar merchandise.

Then the Close for Brenda will be = No (0)

Thus; the amount spent by Brenda will be:

$\hat{amount} \ \hat{ spent} = -91.67 - (229.47* 0)-(604.90 * 0) +(0.02216 * 60000) + (42.62 * 12)$

$\hat{amount} \ \hat{ spent} = -91.67 -0-0 +1329.6 + 511.44$

$\hat{amount} \ \hat{ spent} = 1749.37$

Thus, the expected amount that Brenda is going to spend is $1749.37

Find the sum of 0.5 and -0.5.

Step-by-step answer

Faq

Try asking the Studen AI a question.