Answer:
rephrase your question please
344. 8 out of 135 is 17% so 17% of 2025 is 344.
12. 15 (3x5x1)
13. 8 (4x2x1)
14. 18 (6x3x1)
Hope this helps! :D
It is possible for John to catch the key.
<u>Explanation:</u>
Given:
height, h = 6m
h = -11t² + 20t + 1
Substituting h = 6m in the equation
6 = -11t² + 20t + 1
11t² - 20t + 5 = 0
On solving the above quadratic equation we get
t = 1.5 seconds approximately.
Thus, we can say that John will be able to catch the key because the key reaches to him in 1.5 seconds.
Answer:
The margin of error is 
Step-by-step explanation:
From the question we are told that
The sample size is 
The standard deviation is 
The confidence level is 
%
Generally the level of significance is mathematically evaluated as
%
The critical value of 
obtained from the normal distribution table is
The reason obtaining the critical value of instead of 
is because we are considering the two tails of the area normal distribution curve which is not inside the 99% confidence interval
Now the margin of error is evaluated as
substituting values
