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wolverine [178]
3 years ago
8

Which term best describes the association between variables A and B?

Mathematics
1 answer:
dimulka [17.4K]3 years ago
4 0

Answer: Choice B) negative linear association

=================================

Reasoning:

The points all go downhill as you move from left to right. We can draw a straight line that is fairly close to all of them. This is known as the regression line. The regression line having a negative slope tells us the linear association is negative. This means the correlation coefficient r is negative, so, -1 < r < 0 (r = -1 is not possible as not all points fall on the same straight line)

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what is the value of the the expression x+5/y^2 for x = 2/3 and y= 1/3. A. 17/27 B. 17. C.34. D.51
uysha [10]

Answer:

Step-by-step explanation:

x + 5/y^2

x = 2/3

y = 1/3

2/3 + 5 / (1/3)^2            Expand (1/3)^2

2/3 + 5 / (1/9)                Put a 1 underneath the 5

2/3 + 5/1 / (1/9)             Invert and multiply the second expression

2/3 + 5/1 * 9                 Simplify 5/1

2/3 + 5* 9                     Combine

45 2/3

I'm not getting any of these. It's possible I'm misreading the question, but what you've given is the result I got. All I can suggest is that you ask your teacher how this is done.

5 0
2 years ago
HELP<br>Which equations can be represented by the line that contains the points (6. 8) and (2. 6)?​
german

Answer:

y=1/2x+5

Step-by-step explanation:

first you have to find the slope by using \frac{y2-y1}{x2-x1}

so when you plot in your points and you will get 1/2x.

then you need to find your y-intercept

and since you don't have a 0 you have to slove by using y=mx+b (slope-intercept) formula

you plug in your points and you will get

b=5 and that is how you get your equation.

6 0
3 years ago
Simplify the expression. Write the answer using scientific notation. (9 x 10)^2(2 x 10)^10
Valentin [98]

Answer:

B

Step-by-step explanation:

To multiply scientific notation, multiply each part of the number.

(9 x 10)^2(2 x 10)^10 = (9*2) * (10^ 2 + 10) = 18 * 10 ^ 12

Since scientific notation can only have a digit in the ones place from 1-9. 18*10^12 becomes 1.8*10^13.

The solution is B.

7 0
3 years ago
Expresión is equivalent -1/4y-2 1/4y+1/2(4-2y)
Over [174]

Answer:

hello :

-1/4y-2 1/4y+1/2(4-2y) = -1/4y-2/4y+4/2 -2/2y

                                    = ( -1/4 -2/4 - 4/4)y +2

                                   = (-7/4)y + 2


8 0
4 years ago
Help me with question 4 and 5
lisov135 [29]

Answer:

2.6768·10^(-14)  (Answer C)

Step-by-step explanation:

Problem 4:  We ADD the powers of 10:  10^6·10^(-3) = 10^3.  Also, 3.6·1.7 = 6.12.  Therefore, Answer D is correct.

Problem 5:  Again we ADD (combine) the powers of 10:  10^(-10)·10^(-5) =

10^(-15).  4.78·5.6 = 26.768.  Our intermediary answer is thus:

26.768·10^(-15).  This must be rewritten in the form x.xxxx, so here we have:

2.6768·10^(-14)  (Answer C)

3 0
3 years ago
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