The mean of 20 items is 40 and the mean of another 30 items is 60. What is the mean of
de angles of
whole set of items?​

At this point just choose a mean thats half of the value

Just divide the value by 2 and you will get the mean

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: