Answer:
Expected number of guests is 100.4.
Step-by-step explanation:
It is given that there are 161 guest if there is a heavy snow fall.
Also, the probability for a heavy snow fall is 0.40.
Therefore, P(X = 161) =0.4.
It is also given that there are 60 guests if there is a light snow fall.
The probability for a light snow fall is 1 - 0.4 = 0.6.
Therefore, P(X = 60) = 0.6.
Expected number of guests = (161)P(X = 161) + (60)P(X = 60)
= 161(0.4) + 60(0.6)
= 64.4 + 36
= 100.4
Answer:
Step-by-step explanation:
An exponetial function is represented by
where a is the vertical stretch or initial rate and b is the factor or base.
Since neither point have a x coordinate of zero. Use this method.
plug in y value into the formula and x value into there as well like this
if you divide the second equation from the first
so our equation now is
know let plug one of the point in to find a
Use 3,16
So our equation is
Answer:
= 1.75
Step-by-step explanation:
7/6 divided by 6
= 7/36
7/36 = x/9
Cross multiply fractions:
36x = 63
Divide each side by 36:
x = 7/4 or 1.75
You would just do 1÷5 so it would equal 20 or 20%.
Since we neither want most expensive nor least expensive, we need to go with pillow which is costing $18.49.
So total 4 pillows cost = 4*18.49
= $73.96