Answer:
The probability is 0.2423.
Step-by-step explanation:
Given mean per capita = 19292 dollars
Given the variance = 540225
Now find the probability that the sample mean will be less than 19269 dollar when the sample is 499.
Below is the calculation:
Answer:
12r
Step-by-step explanation:
since r means 1r, do 13-1
Answer:
As the least common multiple of two numbers is 60 , the two numbers are factors of 60 . Among {1,2,3,4,5,6,10,12,15,20,30,60} , 3 & 10 and 5 & 12 are the only two pair of numbers whose difference is 7 . But Least common multiple of 3 and 10 is 30
Let's say there are <em>b</em> students per bus and <em>v</em> students per van.
The two equations we have are
Doubling the first,
Subtracting,
Answer: 7 per van, 20 per bus
Check:
So basically
the square root of (5x+3)= 2 times the square root of (3x-8) or
so what you do is square both sides and get
5x+3=4 times (3x-8)
distribute
5x+3=12x-32
add 32 to both sides
5x+35=12x
subtract 5x from both sides
35=7x
divide by 7
5=x
x=5