10 is the answer.
You know that there are 4 numbers and you have to add the numbers then divide them by four to get the mean. So all you have to do is reverse the steps, multiply 30 by 4 to get 120, then add 12+50+48 to get 110. Then subtract, 120-110=10. To check if it is correct add 12, 50, 48, and 10 to get 120, then divide by 4 to get 30. And voila, there is the answer. I hope this helped for future problems like this one.
Answer:
x = 9, y = 27
Step-by-step explanation:
Since the figures are similar then the ratios of corresponding sides are equal, that is
=
( cross- multiply )
12(x - 1) = 96 ( divide both sides by 12 )
x - 1 = 8 ( add 1 to both sides )
x = 9
Also
=
( cross- multiply )
12(y + 1) = 336 ( divide both sides by 12 )
y + 1 = 28 ( subtract 1 from both sides )
y = 27
Answer: Total = $200
Step-by-step explanation:
<u>Given information</u>
Money spent on shoes = $20.00
Percent of Money spent on shoes = 10%
<u>Given formula</u>
The total amount of money spent × Percent = Money spent on shoes
⇵
The total amount of money spent = Money spent on shoes / Percent
<u />
<u>Substitute values into the given formula</u>
The total amount of money spent = Money spent on shoes / Percent
Total = (20.00) / (10%)
<u>Convert percentage into decimal</u>
Total = 20.00 / 0.1
<u>Simplify the fraction</u>
![\Large\boxed{Total~=~200~Dollars}](https://tex.z-dn.net/?f=%5CLarge%5Cboxed%7BTotal~%3D~200~Dollars%7D)
Hope this helps!! :)
Please let me know if you have any questions
The ratio is:
12500 skiers and 2500 snowboarders!
Answer:
0.018133
Step-by-step explanation:
Given that customers arrive randomly and independently at a service window, and the time between arrivals has an exponential distribution with a mean of 12 minutes.
Let X equal the number of arrivals per hour.
X is having average as reciprocal of 12 minutes
i.e. in one hour on an average expected customers to arrive is 60/12 =5
X being reciprocal of exponential is Poisson with parameter = 5
Probability that 10 customers arrive in one hour
=P(X=10)
=0.018133