Answer:
0.167
Step-by-step explanation:
Arrival time of the bus = 30 minutes
We have to find the probability of waiting between 25 to 30 minutes.
From this we have that,
a = 0
b = 30
The solution can be expressed as;
P(25<x<30) = (30 - 25) / (30 - 0)
P(25<x<30) = 5/30
P(25<x<30) = 0.167
0.167 is the probability of waiting between 25 minutes and 30 minutes.
Answer:
2055.15
Step-by-step explanation:
A(1+r)^n=4000
A is the money that she need to invest
r is rate
n is the time( depend on monthly or yearly rate)
A(1+4.25%)^16=4000
A=2055.15
a)
b) The cost per year is 365 times this amount. You save 35/50 times that, so you save ...
... $0.045×365×35/50 = $11.4975 ≈ $11.50 . . . annual savings
_____
If the bulb is using 15 W instead of 50 W, you are saving the cost of 50-15=35 W, so 35/50 of the cost of running the higher-power bulb.
<h2>
Answer with explanation:</h2>
Given : A standardized exam's scores are normally distributed.
Mean test score :
Standard deviation :
Let x be the random variable that represents the scores of students .
z-score :
We know that generally , z-scores lower than -1.96 or higher than 1.96 are considered unusual .
For x= 1900
Since it lies between -1.96 and 1.96 , thus it is not unusual.
For x= 1240
Since it lies between -1.96 and 1.96 , thus it is not unusual.
For x= 2190
Since it is greater than 1.96 , thus it is unusual.
For x= 1240
Since it lies between -1.96 and 1.96 , thus it is not unusual.
Hi there!
Let's use the distance formula to find the distance between A = (-5,2) and B = (-3,1). Using the distance formula, we get that the distance between A and B is 2.2.
ANSWER:
Option 1 - 2.2 units
Hope this helps!! :)
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