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vaieri [72.5K]
2 years ago
9

Suppose you were to create a scatter plot of outside temperature and amount of heating bill. Would you expect to see a positive,

negative, or no relationship between the two variables. Explain your answer.

Mathematics
2 answers:
BabaBlast [244]2 years ago
8 0

Answer:

I would expect to see a negative relationship between the two variables

Step-by-step explanation:

One would expect that the amount of heating bill decreases as the outside temperature increases, because one would use less the heating. Then the two variables would have an inverse or negative relationship between them.

As the outside temperature is the independent variable it should be in the x-axis and the amount of heating bill in the y-axis, because is the dependent variable. So the scatter plot would be like the one shown.

mr Goodwill [35]2 years ago
6 0
<span>When you<span> create a scatter plot of outside temperature and amount of heating bill you expect as negative relationship between the two variables because when  the temperature outside is very low then you increase the heater the would increase the heating bill.</span></span>
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alright so ya girl is in 7th grade. i got math hw and i need some help urgent! here's the question: The suspect has been withdra
Sonbull [250]

He has been withdrawing money for 69 days.

Step-by-step explanation:

Amount of credit card = $5000

Let,

x be the number of days

Amount after withdrawing $45 each day for x days = $1895

Amount left = Total amount - Withdrawal amount per day * number of days

1895 = 5000 - 45*x

1895=5000-45x

Solving for x;

1895-5000=-45x\\-3105=-45x\\-45x=-3105

Dividing both sides by -45

\frac{-45x}{-45}=\frac{-3105}{-45}\\x=69

He has been withdrawing money for 69 days.

Keywords: subtraction, division

Learn more about subtraction at:

  • brainly.com/question/3756853
  • brainly.com/question/3763153

#LearnwithBrainly

3 0
2 years ago
Todor was trying to factor 10x^2-5x+15. He found that the greatest common factor of these terms was 5 and made an area model: Wh
jenyasd209 [6]

Answer:

The width of the area model is equal to

(2x^2-x+3)\ units

Step-by-step explanation:

we know that

The area of a rectangular model is given by the formula

A=LW ----> equation A

where

L is the length

W is the width

we have

A=10x^2-5x+15

Factor the expression

A=5(2x^2-x+3)

substitute the value of the Area in the equation A

5(2x^2-x+3)=LW

In this problem

The greatest common factor of these terms is the length (L=5 units)

so

we can say that the width is equal to (2x^2-x+3)

therefore

The width of the area model is equal to

(2x^2-x+3)\ units

4 0
2 years ago
A population has a standard deviation of 80. A random sample of 400 items from this population is selected. The sample mean is d
Helga [31]

Answer:

ME= 1.8808 * \frac{80}{\sqrt{400}} =7.5232

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

\sigma =80 represent the population standard deviation

n=400 represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

Since the Confidence is 0.94 or 94%, the value of \alpha=0.06 and \alpha/2 =0.03, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.03,0,1)".And we see that z_{\alpha/2}=1.8808

The margin of error is given by:

ME= 1.8808 * \frac{80}{\sqrt{400}} =7.5232

4 0
2 years ago
John is planning to purchase a new car that costs $15,500. On average, a new car loses 11% of its value the moment that it is dr
Levart [38]

15500 times 0.37 is 5735.

$5735

The 11% statement is extra information.

4 0
2 years ago
Read 2 more answers
Solve the equation y′ + 3y = t + e^(−2t).
Leni [432]
Hello,

I am going to remember:

y'+3y=0==>y=C*e^(-3t)

y'=C'*e^(-3t)-3C*e^(-3t)

y'+3y=C'*e^(-3t)-3Ce^(-3t)+3C*e^(-3t)=C'*e^(-3t) = t+e^(-2t)
==>C'=(t+e^(-2t))/e^(-3t)=t*e^(3t)+e^t
==>C=e^t+t*e^(3t) /3-e^(3t)/9

==>y= (e^t+t*e^(3t)/3-e^(3t)/9)*e^(-3t)+D
==>y=e^(-2t)+t/3-1/9+D
==>y=e^(-2t)+t/3+k


4 0
2 years ago
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