X = 360 - (122+58+58)
x = 360 - 238
x = 122
The answer is 91 and the property used is the Identity Property of Addition.
Answer:
15
Step-by-step explanation:
Given:
The given sets are:
Set a : 200, 104, 100, 160.
Set b: 270, 400, 483, 300, x.
Mean of set a: mean of set b= 3:8
To find:
The value of x.
Solution:
Formula for mean:

The mean of set of a is:



The mean of set of b is:



It is given that,
Mean of set a: mean of set b= 3:8




Isolate the variable x.


Divide both sides by 3.


Therefore, the value of x is 427.
Answer:
48
Step-by-step explanation:
The formula for finding the area of a rectangle is: l * w = a
So 12*4 = 48.