Answer:
Step-by-step explanation:
Given that the random variable X is normally distributed, with
mean = 50 and standard deviation = 7.
Then we have z= 
Using this and normal table we find that
a) 
b) When z=0.02
we get
c) 90th percentile z value =1.645
90th percentile of X 
Answer: Jaleel´s method is correct and the right option is option number D
Step-by-step explanation:
its because 2(x-2)
= 2x-4
note 2 is multiplied with both x and -2!
Answer:
The formula of area is Pi×R×R
and then you add all sides and answer of your question is 30cm
Answer:
- 1.6 days (1 3/5 for simplified form).
Step-by-step explanation:
<u>Given equation:</u>
<u>We know that a box survives 1/5 a day.</u>
<u>It will survive 1 3/5 a day in 8 boxes.</u>
Answer:
21a+77b
Step-by-step explanation:
7x3=21
7x11=77
