Answer: a= 0.0231
Step-by-step explanation:
n=8
p=0.75
q=1 - 0.75 = 0.25
(p=x)
p(5) = 8C5 (0.25)^5 (0.75)^8-5
p(5)= 0.0231
Or 2.31%
Answer:
The average weight of new born otter was, 
Step-by-step explanation:
Let average weight of new born otter be x.
As per the given statement: At birth it's weight was 7/8 kilograms which is 9/10 kilogram less than the average weight of a new born otter in the aquarium
"
kg less than average weight of a new born otter" means 
As per the given information, we have;

Add
both sides, we have;

Take LCM of 8 and 10 is, 40
⇒
Simplify:

Therefore, the average weight of new born otter was, 
AD*EB=CE*DB because cross multiplication
Answer:
1120
Step-by-step explanation:
8/50=x/7000
50x=56000
Divide 50 on both sides
1120
Answer: 
<u>Step-by-step explanation:</u>
Parabola Skate Rental: 4.50x + 35
Arc Hawk Skate Rental: 5.25x + 25
If you want to know when their cost will be the same, set the equations equal to each other.
5.25x + 25 = 4.50x + 35
0.75x + 25 = 35 <em>subtracted 4.50x from both sides</em>
0.75x = 10 <em>subtracted 25 from both sides</em>
<em>divided both sides by 0.75</em>
x =
<em>simplified the fraction</em>