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horrorfan [7]
3 years ago
15

Can you help me with this, please? It's due for the 10th of March, 2021. I just a bit of guidance, and the first 2 questions wou

ld be fine, if that's OK with you?
Mathematics
1 answer:
Gala2k [10]3 years ago
5 0

Answer:

<h2><em><u>not sure about answers</u></em></h2>

Question 1 : A or B or C don't know

Question 2: A = that is what the question is answering

Question 3: B = that is what the question is answering

Question 4: B  = that is what the question is answering

Step-by-step explanation:

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Which set best describes the numbers used on the scale for a standard thermometer?
Gnoma [55]
I believe it’s B sorry if I’m wrong
7 0
2 years ago
What does x2+11x+18 equal
OLEGan [10]

Answer:

x =(11-√193)/2=-1.446

x =(11+√193)/2=12.446

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Solve the system of linear equations. separate the x- and y- values with a coma. 20x=-58-2y
lianna [129]
The best way to solve is by using elimination method.
20x = -58 - 2y
17x = -49 - 2y
Multiply second equation by -1
20x = -58 - 2y
-17x = 49 + 2y
Add equations.
3x = -9 
Divide.
x = -3
Plug in -3 into one of the equations.
17(-3) = -49 - 2y
-51 = -49 - 2y
Add 49 to both sides.
-2 = -2y
Divide.
1 = y
So your solution is (-3, 1).
I hope this helps love! :)

6 0
3 years ago
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
Omials<br> GCF of 96x5 and 64x2?
Agata [3.3K]
32
the greatest common factor of 480 and 128 is 32
480 / 32 = 15
128 / 32 = 4
3 0
3 years ago
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