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Marina86 [1]
2 years ago
14

Pls help me with this​

Mathematics
1 answer:
Marizza181 [45]2 years ago
6 0

Step-by-step explanation:

3.2 \times  {10}^{4}  \times 1.6 \times  {10}^{7}  = 5.1 \times  {10}^{11}

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You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your d
Naily [24]

Answer:

With a correlation coefficient of 0.109 you can not be confident at all; this is about as close to a random guess you could get.  

Step-by-step explanation:

Lines of best fit are used to try to make a correlation (relationship) about data that will either be positive (uphill), negative (downhill) or no correlation (points are scattered).  Correlation coefficients based off of a line of best fit will fall between -1 and +1 where -1 would represent a perfect negative relationship and +1 would represent a perfect positive relationship.  A correlation coefficient of 0 would indicate that there is no relationship.  So, if your data shows a correlation coefficient of 0.109, which is closest to 0 on a number line, then you can't be sure that your data has a very close relationship.


7 0
3 years ago
State the value of 'x' in this equation, and explain why you know this to be true without doing any calculations.
Kaylis [27]

Answer:

x=9

if

a^b = a^c

then b=c

so in this case x=9

4 0
1 year ago
To which subset of real numbers does the number 1/5 belong
frozen [14]
Irrational is the correct answer
7 0
3 years ago
Read 2 more answers
-1/3+(-7/4) in simplist form
Airida [17]

Answer:

your answer will be -\frac{25}{12}

Step-by-step explanation:

hope this helps have a nice day :)

8 0
2 years ago
Read 2 more answers
Foil: (x+9)(3x-4)
QveST [7]

QUESTION 1

The given binomial is;

(x+9)(3x-4)

First terms are multiplied: x\times 3x=3x^2

Outside terms are multiplied: x\times -4=-4x

Inside terms are multiplied: 9\times 3x=27x

Last terms are Multiplied: 9\times -4=-36

This gives us;

=3x^2-4x+27x-36

=3x^2+23x-36

QUESTION 2

We want to factor

6r^5s+4r^4s^2-8r^2s

The HCF is 2r^2s

We factor to get;

2r^2s(3r^3+2r^2s-4)

QUESTION 3;

x^2+x-2=0

Split the middle term;

x^2+2x-x-2=0

Factor

x(x+2)-1(x+2)=0

(x+2)(x-1)=0

(x+2)=0,(x-1)=0

x=-2,x=1

The solutions are;

x=-2 and x=1

These are the x-intercepts of the graph of the function

f(x)=x^2+x-2

3 0
3 years ago
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