Answer:
And we can find this probability on this way:
And using the normal standard distribution table or excel and we got:
Step-by-step explanation:
Let X the random variable that represent the length of time student of a population, and for this case we know the distribution for X is given by:
Where
and
We are interested on this probability
We can solve the problem using the z score formula given by:
If we apply this formula to our probability we got this:
And we can find this probability on this way:
And using the normal standard distribution table or excel and we got:
Answer:
Step-by-step explanation:
2πr=44
2×22/7×r=44
r=44×7/44=7
diameter=2×7=14
Answer:
x=7
Step-by-step explanation:
The given equation is:

Multiplying both sides by LCM of 3 and 6
So,

Hence, the solution of the equation is x=7 ..
Answer:
x = -3/2 = -1.500
x = 7/3 = 2.333
Step-by-step explanation: