Answer: a = 14.5 mm
Explanation: Perimeter is the measure of the outside, which to get you just add the outside values together. To find a, you take the perimeter that we know is 34.8 mm and subtract the 11.6 mm and 8.7 mm, which leaves us to have 14.5 mm. We can check that this value is approximately right because it is the hypotenuse, which is the longest side. Since the value is the biggest out of the other two, we can assume that we found the right value.
Answer: 482
Step-by-step explanation:
Formula to find the sample size is given by :-
(1)
, where z* = critical z-value (two tailed).
= Population standard deviation and E = Margin of error.
As per given , we have
Margin of error : E= 3
Confidence level = 90%
Significance level =
Using z-table , the critical value for 90% confidence=
Required minimum sample size = 
[Substitute the values in formula (1)]
[ Round to the next integer]
Hence, the number of observations required is closest to 482.
Answer: A. and B. are right
Step-by-step explanation: Hope dis helps u
The probability of a dice landing on the number 4 is: 8.33%
And the probability of rolling a dice and landing on an even number is: 3/6 = 1/2
