Answer:
b
Step-by-step explanation:
It's an isosceles triangle so both sides are the same. The missing side is 30
Answer: 1.960
Step-by-step explanation:
The value of z we use to calculate a confidence interval with a (
) confidence level is a two-tailed test value i.e. represented by :-

Given : The level of confidence: 
Then, significance level : 
With the help of standard normal distribution table for z , we have

Hence, the value of z should be used to calculate a confidence interval with a 95% confidence level =1.960
It is very large quantity....and can't be predicted.....and as I am from India ....I guess the whole kingdom rice will be not enough !!!
as the number will go trillion trillion !!!