10^x=39 this is exponential form.
A negative number doesn't have a square root...
only one number has to be negative not both...
and 820 doesn't have a perfect square root...
it would be 28.635...
Answer: Second option: 8/21
Solution:
P(1) = (Number of times we get 1) / (Total number of results)
Number of times we get 1 = 8
Total number of results = 21
P(1)=8/21
Each section of the tree diagram (in this case the branches that say vanilla chocolate and strawberry) must add up to 1
so to answer you should do 0.45+0.35= 0.8
then 1-0.8 =0.2
so Z is 0.2
The answer is C. 81.49 !!
