, 24.01.2020lilgunter12

# (06.07 lc)the table below shows the age of some participants in a quiz competition and the number of questions they could answer correctly: age (years) (x)1521 1722 16 1918number of questions they could answer (y) 17171717 1717 17what is the correlation coefficient for the data, and what does it represent? (5 points)o0; it represents no correlation between x and yoob1; it represents a linear positive correlation between x and yooc-1; it represents a linear negative correlation between x and yod1; it represents a linear negative correlation between x and yintl​

slope =   (y2 -y1) ÷ (x2 -x1)

slope = (0 -0) / (-5, -7)

slope = 0 / -12 = 0

the slope of the line is zero.   it is perfectly horizontal.

step-by-step explanation:

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !

0.038

step-by-step explanation:

Answer: d. 48 step-by-step explanation: i used a calculator so i am 100% sure these are right   mark as brainliest?

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