Answer:
n = 61 costumers
Step-by-step explanation:
For calculating the number of costumers he should sample we use the next equation:
Where E is the error that we are prepared to accept, in this case E = 0.15
How we don't know the value of p, we can estimate it like p = 0.5
∝ = 1-0.98 = 0.02
1-∝/2 = 0.99
n = 60.32 costumers
n ≈ 61 costumers
Answer:
A
Step-by-step explanation:
- He spends:
- 30 mins on History
- 60 mins on English
- x mins on math
- so the total time he spends is
- one fourth of this is his math time, since x is math time, then we have
- But we know what totaltime in minutes is so
- or simply:
X equals 3 because i know 2 to the fifth power is 32,so 3x-4=5so 3*3=9
You mean 60%of 5 1/2? that makes more sense...
i would do it like this:
(60% is the same as
(so that there is no confusion, i've put it into an improper fraction
now we can multiply:
which is 3.3.
so 60% of 5 and a half is 3.3.
It I see g and b the anwser
