A student is assessing the correlation between the average number of hours of internet browsing and average score on a math test. The table below shows the data: Number of hours
of internet
browsing
(x)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Score on math
test
(y)
95
94
93
92
91
90
89
88
87
86

A) There's a correlation between the average number of hours of internet browsing and scores on the Maths test.

B) Slope = -2

Slope is negative and so it tells us that there is a negative correction between the average number of hours of internet browsing and scores on the Maths test.

C) y-intercept = 95

This tells us that when students spend zero hours browsing, they score the highest scores in the Maths test.

Step-by-step explanation:

A) From the table of values, we see that when the number of hours of internet browsing is increasing by 0.5, the score on the Maths test is decreasing by 1.

Therefore we can say there's a correlation between the average number of hours of internet browsing and scores on the Maths test.

B) Slope is; (y2 - y1)/(x2 - x1)

Since there is an equal increment in x and y values through the table, we can use any two consecutive values of x and their corresponding y-values.

Thus;

Slope = (93 - 94)/(1 - 0.5)

Slope = -1/0.5

Slope = -2

C) y-intercept is the y-value at which x = 0.

From the table, we see that at x = 0, y = 95

This tells us that when students spend zero hours browsing, they score the highest scores in the Maths test.

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.