Answer:
48
Step-by-step explanation:
Given: 
Now, solving it.
We first open parenthesis which is (b)
(17) = 
Next Multiply both side by 2
⇒ 816 = 
Now, we will divide both side by 17
∴ b
Answer:
-60
Step-by-step explanation:
-3 x -4 x -5
12 x -5
-60
negative x negative x negative= negative
Answer:

Now we are supposed to find probabilities that the response time is between 5 and 10 minutes i.e P(5<x<10)
Formula : 
at x = 5


at x = 10


P(-2<z<0.6315)=P(z<0.6315)-P(z<-2)
Refer the z table
P(-2<z<10)=0.7357-0.0228=0.7129
So, the probability that response time is between 5 and 10 minutes is 0.7129
b)the response time is less than 5 minutes
at x = 5


P(x<5)=P(z<-2)=0.0228
So, the probability that the response time is less than 5 minutes is 0.0228
c)the response time is more than 10 minutes
at x = 10


P(x>10) = 1-P(x<10) = 1-P(z<0.63) = 1-0.7357 = 0.2643
So, The probability that the response time is more than 10 minutes is 0.2643
Answer:

Step-by-step explanation:
