In the following situations, is there likely to be a correlation? If so does the correlation reflect a causal relationship? Explain. the average daily winter temperature and your heating bill
A. There is a positive correlation. The higher the average daily winter temperature the higher your heating bill.
B. There is a negative correlation and a causal correlation. The higher the average daily winter temperature the lower your heating bill.
C. There is no correlation.
D. There is not enough information to answer the question.

s

There is a negative correlation and a causal correlation. The higher the average daily winter temperature the lower your heating bill.

Expert answered|JANUARY|Points 142|

Question

Asked 4/5/2014 10:38:27 AM

Updated 4/5/2014 11:33:13 AM

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What are the solutions of the inequality? Check the solutions. 4x + 6 –3
B. x –6 **Weegy:** B. x **User:** What are the solutions of the compound inequality? Graph the solutions.
–2 **Weegy:** The inequality -2 **User:** What are the solutions of the inequality? Graph the solutions.
b – 4 > 4
A. b –8
C. b >0
D. b > 8
**Weegy:** b ? 4 > 4
Adding 4 to both sides gives:
b > 8 (B). **User:** Suppose U = {–10, –6, –2, 0, 3, 5} is the universal set and T is the set {–10, –6, 0}.
What is the complement of set T?
A. {–2, 3, 5}
B. {–10, –6, 0}
C. {–6, –2, 0, 3, 5}
D. {0, 3, 5} (More)

Question

Not Answered

Updated 4/6/2014 10:03:02 AM

2 Answers/Comments

4x + 6 < –6

4x < - 6 - 6

4x < -12

x < -3

4x < - 6 - 6

4x < -12

x < -3

Added 4/6/2014 10:01:39 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:18:34 AM]

Suppose U = {–10, –6, –2, 0, 3, 5} is the universal set and T is the set {–10, –6, 0}. The complement of set T is A. {–2, 3, 5}

Added 4/6/2014 10:03:02 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:18:35 AM]

Find the slope of the line.
A.
B. 2
C. -2
D. **Weegy:** Please wait..checking on it. **User:** The scatter plot shows the number of mistakes a piano student makes during a recital versus the amount of time the student practiced for the recital. How many mistakes do you expect the student to make at the recital after 6 hours of practicing?
A. 55 mistakes
B. 37 mistakes
C. 63 mistakes
D. 45 mistakes **Weegy:** A. 55 mistakes **User:** Write an equation for the line that is parallel to the given line and passes through the given point. y = x + 8; (2, 16)
A. y = x + 6
B. y = x
C. y = x + 14
D. y = x – 6 (More)

Question

Updated 4/6/2014 9:37:03 AM

1 Answer/Comment

The equation for the line that is parallel to the given line y = x + 8 and passes through the given point (2, 16) is C. y = x + 14

Added 4/6/2014 9:37:03 AM

This answer has been confirmed as correct and helpful.

6y = x + 5 **Weegy:** 7 (x+4+6y) = 7x + 28 + 42y **User:** Write an equation in point-slope form for the line through the given point with the given slope. (8, 3); m = 6
A. y - 3 = 6(x + 8)
B. y + 3 = 6(x - 8)
C. y + 3 = 6x + 8
D. y - 3 = 6(x - 8) **Weegy:** b
**User:** Find the slope of the line.
A.
B. 2
C. -2
D. **Weegy:** Please wait..checking on it. **User:** What is the solution of the system? Use a graph.
y = –3x + 2
y = –3x + 4
A.
(0, 4)
B.
infinitely many solutions
C.
no solutions
D.
(0, 2) **Weegy:** the solution of the system has actually C. infinitely many solutions. **User:** A corner store sells two kinds of baked goods: cakes and pies. A cake costs $5 and a pie costs $7. In one day, the store sold 15 baked goods for a total of $91. How many cakes did they sell?
A. 8 cakes
B. 4 cakes
C. 7 cakes
D. 5 cakes **User:** What system of inequalities is represented by the graph?
A. y x - 2
y -3x - 6
B. y x + 3
y 2x - 6
C. y x - 2
y -3x - 6
D. y x + 3
y 2x - 6 **Weegy:** For the equation y = 2x-4, select all that are true. [
y = 2x - 4 is a linear equation
(1, 2) is a solution to the equation
(1, -2) is a solution to the equation
(-1,-6) is a solution to the equation
(2, 0) is a point on the graph of y = 2x ? 4
(2, 0) is on the line y = 2x ? 4 ] **User:** How many solutions does the system have?
x = -4y + 4
2x + 8y = 8
A. one solution
B. two solutions
C. infinitely many solutions
D. no solution **Weegy:** The answer is D. no solution **User:** Graph the inequality.
y **Weegy:** y = 3x - 5 is equation of straight line.
To draw line , two points are required.
Suitable points are (0 , - 5) , (4,7)
Draw straight line thro' these points. **User:** What is the graph of the system?
y x + 4
A.
B.
C.
D. **Weegy:** it shift down by three units. **User:** The school cafeteria sells two kinds of wraps: vegetarian and chicken. The vegetarian wrap costs $1.00 and the chicken wrap costs ... (More)

Question

Not Answered

Updated 4/6/2014 9:08:02 AM

7 Answers/Comments

The solution the system x = -4y + 4; 2x + 8y = 8 has is: C. infinitely many solutions.

x = -4y + 4 (equation 1), can be rewritten as x + 4y = 4

2x + 8y = 8 (equation 2), devided by 2 on both sides: x + 4y = 4

Therefore, equation 1 and 2 are the same line, and there are infinite solutions to the line system.

x = -4y + 4 (equation 1), can be rewritten as x + 4y = 4

2x + 8y = 8 (equation 2), devided by 2 on both sides: x + 4y = 4

Therefore, equation 1 and 2 are the same line, and there are infinite solutions to the line system.

Added 4/6/2014 8:49:39 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:19:46 AM]

3x – 4y = 9

–3x + 2y = 9

Adding the above equations: -2y = 18, y = 18/-2 = -9

3x – 4(-9) = 9

3x + 36 = 9

3x = 9 - 36 = - 27

x = -27/3 = -9

The solution for the sytem of equations 3x – 4y = 9; –3x + 2y = 9 is D. (–9, –9)

–3x + 2y = 9

Adding the above equations: -2y = 18, y = 18/-2 = -9

3x – 4(-9) = 9

3x + 36 = 9

3x = 9 - 36 = - 27

x = -27/3 = -9

The solution for the sytem of equations 3x – 4y = 9; –3x + 2y = 9 is D. (–9, –9)

Added 4/6/2014 8:54:19 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:19:47 AM]

3x – 4y = –24 (equation 1)

x + y = –1 multiply 4 on both sides: 4x + 4y = -4 (equation 2)

Adding up equation 1 and equation 2 we get: 7x = - 28

so x = -28/7 = -4;

(-4) + y = –1,

y = - 1 + 4 = 3

The slotion for the system of equations 3x – 4y = –24; x + y = –1 is B. (–4, 3)

x + y = –1 multiply 4 on both sides: 4x + 4y = -4 (equation 2)

Adding up equation 1 and equation 2 we get: 7x = - 28

so x = -28/7 = -4;

(-4) + y = –1,

y = - 1 + 4 = 3

The slotion for the system of equations 3x – 4y = –24; x + y = –1 is B. (–4, 3)

Added 4/6/2014 9:00:47 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:19:48 AM]

The solution of the system y = x + 5; y = –5x – 1 is (-1, 4)

y = x + 5

y = –5x – 1

Replace y in the second equation with the first one;

x + 5 = –5x – 1

x + 5x = - 1 - 5

6x = -6

x = -1

y = -1 + 5 = 4

y = x + 5

y = –5x – 1

Replace y in the second equation with the first one;

x + 5 = –5x – 1

x + 5x = - 1 - 5

6x = -6

x = -1

y = -1 + 5 = 4

Added 4/6/2014 9:05:11 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:19:49 AM]

The solution of the system y = x + 6; y = 2x is A. (6, 12)

replace y with 2x in the equation y = x + 6 we get: 2x = x + 6, so x = 6;

y = 2(6) = 12

replace y with 2x in the equation y = x + 6 we get: 2x = x + 6, so x = 6;

y = 2(6) = 12

Added 4/6/2014 9:08:02 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:19:50 AM]

What are the slope and y-intercept of the graph of the given equation?
y = –4x + 2
A. The slope is 4 and the y-intercept is –2.
B. The slope is –2 and the y-intercept is –4.
C. The slope is 2 and the y-intercept is –4.
D. The slope is –4 and the y-intercept is 2. **Weegy:** The slope and y-intercept of the graph of the given equation y = 4x + 2 is slope = -4, y intercept = 2. **User:** The number of sofas a factory produces varies directly with the number of hours the machinery is operational. Suppose the factory can produce 455 sofas in 48 hours. What is an equation that relates the number of sofas produced, n, with the amount of time, t, in hours? What is the graph of your equation?
A. n = 9.48t
B. n = 0.11t
C. t = 4.74n
D. t = 9.48n
**Weegy:** d **User:** Below are the graphs of y = | x | and y = | x | - 9 . How are the graphs related?
A. The graphs have the same shape. The y-intercept of y = | x | is 0 and the y-intercept of the second graph is –9.
B. The graphs have the same y-intercept. The second graph is steeper than y = | x | .
C. The two graphs are the same.
D. The graphs have the same shape. The y-intercept of y = | x | is 0 and the x-intercept of the second graph is –9. Reset Selection **Weegy:** We are not capable of viewing graphs here in weegy. **User:** Write the slope-intercept form of the equation for the line.
A. y = 8/5x + 1/2
B. y = 5/8x + 1/2
C. y = -5/8x + 1/2
D. y = 8/5x - 1/2 **Weegy:** x= 1/4 **User:** What is the slope of the line that passes through the pair of points? (1, 7), (10, 1)
A. 3/2
B. -3/2
C. 2/3
D. -2/3 **Weegy:** The slope of a line that passes through the points(1, 7) and (10, 1) is: B. -2/3 (More)

Question

Updated 4/6/2014 9:35:23 AM

3 Answers/Comments

The slope and y-intercept of the graph of the equation y = –4x + 2 is D. The slope is –4 and the y-intercept is 2.

Added 4/6/2014 9:12:38 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:20:52 AM]

The factory can produce 455 sofas in 48 hours, it's production rate is 455/48 = 9.48 sofas/hour.

The equation that relates the number of sofas produced, n, with the amount of time, t, in hours is A. n = 9.48t

The equation that relates the number of sofas produced, n, with the amount of time, t, in hours is A. n = 9.48t

Added 4/6/2014 9:32:18 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:21:29 AM]

The relationship between the graphs of y = | x | and y = | x | - 9 is: The y-intercept of y = | x | is 0 and the y-intercept of the second graph is –9.

Added 4/6/2014 9:35:23 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [4/6/2014 10:20:54 AM]

Consider the sequence 130, 143, 156, 169, ...
Write an explicit formula to represent the arithmetic sequence and use it to find the 13th term.
A. A(n) = 130 + 13n; 299
B. A(n) = 130 + 13n; 286
C. A(n) = 130 + (n-1)13; 299
D. A(n) = 130 + (n-1)13; 286

Question

Updated 4/22/2014 11:25:34 PM

1 Answer/Comment

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