Answer:
x÷4≥5
Step-by-step explanation:
Answer:
1/81.
Step-by-step explanation:
3^-4 = 1 /3^4
= 1/81.
Answer:
74.48
Step-by-step explanation:
98% of 76 :
76 ÷ 100 = 0.76
multiply it with 98
0.76 × 98 = 74.48
Answer:
The mean is 24.205
Step-by-step explanation:
Firstly, we need to get the z-score
From the question, the probability we have is the probability that commuters take more than 22 minutes to commute one-way
So the probability we had was;
P( x > 22)
So we need the z-score corresponding to 63.70% or simply 0.637
We can use the standard normal distribution table to get this
Mathematically, from the standard normal distribution table this is -0.35
z-score = (x- mean)/SD
-0.35 = (22-mean)/6.3
22-mean = -2.205
mean = 22 + 2.205 = 24.205
Multiplication goes first 0.8x1.5=1.2
4+1.2-3= 2.2
