Answer:-5/7,-4/7,-3/7,-2/7
Step-by-step explanation:
To determine the number of subjects that are needed for the experiments, we multiply the number of independent variables with the number of scores. For example, there are n independent variables then, there are approximately,
number of subjects = 20 x n = 20n
((n-2)×180)/n = 156
(n-2)×180=156n
24n =360
n =15
360/n =36
n = 10
a)15 b)10
2x + 30 = -20x + 8
2x + 20x = 8 - 30
22x = -22
x = 1
