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ra1l [238]
3 years ago
13

I have 10 minutes please help

Mathematics
1 answer:
daser333 [38]3 years ago
7 0

Answer:A,B,C is your answer hope this helped

plz make brainly

Step-by-step explanation:

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I need help with this I don't understand this math
Dmitriy789 [7]

The exponential regression equation is y = 172.21(0.99)ˣ and at x = 60 minutes y = 94.22 degree Fahrenheit and at x = 240 minutes y = 15.43 degree Fahrenheit.

<h3>What is correlation?</h3>

It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.

\rm r = \dfrac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{{[n\sum x^2- (\sum x)^2]}}\sqrt{[n\sum y^2- (\sum y)^2]}}

We have data shown in the table:

We can find the exponential regression equation using the data shown.

\rm y = ab^x

After calculating from the data:

a = 172.21 and b = 0.99

\rm y = 172.21(0.99)^x

The correlation coefficient will be:

r = -0.99

The range will be all real numbers.

The domain will be y > 0

As we can see in the graph x ∈R and y>0

After an hour,

Plug x = 60 minutes in the exponential regression equation:

\rm y = 172.21(0.99)^{60}

y = 94.22 degree Fahrenheit

After 4 hours, plug x = 240

\rm y = 172.21(0.99)^{240}

y = 15.43 degree Fahrenheit

 

Similarly, we can find any data from the exponential regression equation.

Thus, the exponential regression equation is y = 172.21(0.99)ˣ and at x = 60 minutes y = 94.22 degree Fahrenheit and at x = 240 minutes y = 15.43 degree Fahrenheit.

Learn more about the correlation here:

brainly.com/question/11705632

#SPJ1

7 0
2 years ago
2/3 multiplied by what equals 3/4
Serga [27]
9/8 is your answer i believe
4 0
3 years ago
Mrs. Clements has a table with a top that is shaped like the trapezoid shown. Which expression can Mrs. Clements use to find the
Lunna [17]

Answer:

60

Step-by-step explanation:

7 0
3 years ago
The monthly rent of Marilyn's house went from $500 to $440, If p is the
Mila [183]

Answer:

um

Step-by-step explanation:

5 0
3 years ago
Noel Devine bought a new dishwasher for $320 he paid $20 down in May 10 monthly payments of $34
Tpy6a [65]
Added all that up and you get 680$

hope this helps
3 0
3 years ago
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