Answer:
16
Step-by-step explanation:
10=8
20=y
10*y = 8*20
10y= 160
y=16
Sr(100) = 10 because, by convention, we only refer to the positive root.
If the question was solve x^2 = 100 then there are two possible values for x. +10 and -10
Answer:

Step-by-step explanation:
a. A fair dice has 6 sides with unique identities.
-The sample space of one throw is 6 and each face has an equal chance of showing up.
-The probability of a 6 is calculated as:

Hence, the probability of a 6 is 
b.A fair die has 6 unique faces.
-Two throws will have a sample space of 12.
-Each face has an equal probability of appearing twice.
-The probability of a 6 on both throws is:

c. A coin has 2 sides(head, tail) and a die has 6 sides.
-The total sample space for the simultaneous throw of a coin and die is 12.
-The resultant sample space is :

You are putting all your questions here it might be a good idea to try it yourself.
4*4*2->32
8*8*4->256
it is multiplied by 8