A refrigerator costs $1799.99. New parts for this refrigerator cost $345, labor to repair it costs $553, and
1 answer:
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Answer:
Slope is -8
Step-by-step explanation:
First and foremost, welcome to Brainly!
I'll begin with the basics of slope, just to help you get the gist of this crucial concept -
Slope can be rewritten as rise/run, although written formally as :
when we are given two coordinates (x,y) on the line.
One important thing to note is that slope belongs to a general equation,
y = mx+b
where b represents the y intercept and m is slope.
We're given two coordinates in your question: (6,9) and (7,1):
m = -8 is the final answer.
I hope this helps! By the way, slope is a concept that will follow you to calculus and physics, so I urge you to practice!
Answer:
1
The correct option is b
2
The correct option is h
Step-by-step explanation:
From the question we are told that
The sample size is n = 15
The difference in population proportion is
Generally the sample mean of the input temperature is
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=>
Generally the sample mean of the output temperature is
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Generally the difference of the sample mean of the input temperature and that of the output temperature is
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Generally the standard deviation is mathematically represented as
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Generally the degree of freedom is mathematically represented as
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Generally the probability of t obtained from the t - distribution table at a degree of freedom of is
Generally the p-value is mathematically represented as
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From the values obtained we see that hence
The decision rule is
Fail to reject the null hypothesis
The conclusion is
The cooling system changes the temperature of the water by 6 degrees.