Find the residual values, and use the graphing calculator tool to make a residual plot.

a. No, the points are in a curved pattern.
b. No, the points are evenly distributed about the x-axis.
c. Yes, the points are in a linear pattern.
d. Yes, the points have no pattern.

Step-by-step explanation:

The residual values are basically the difference between Given values and Predicted values.

So, the complete table would be

x      Given      Predicted      Residual

1        -2.7           -2.84              0.14

2       -0.9           -0.81              -0.09

3         1.1              1.22             -0.12

4         3.2            3.25             -0.05

5         5.4            5.28              0.12

Now, to make a residual plot, we just need to graph all points formed by x-colum and residual column.

The image attached shows the residual plot.

Therefore, the right answer is a., because in the residual plot you can notice that the points are in a curved pattern, like in a parabola-like pattern.

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92