Answer:
you want 4 correct and 16 incorrect
there are 20 questions
each question has four answers, so
P(right answer) = 1/4
P(wrong answer) = 3/4
----
Since you want 4 correct of 20 we have a combination of 20C4
This is a binomial problem where p = 1/4, q = 3/4 and we get
(20 "choose" 4)*(probability correct)^(number correct)*(probability incorrect)^(number incorrect)
putting numbers in we get
(20c4)*(1/4)^4*(3/4)^16
This gives us
~ .189685
Step-by-step explanation:
So if you want to add
we distribute
a(b+c)=ab+ac so
-2(m+n-4)=-2m-2n+8
5(-2m+2n)=-10m+10n
n(m+4n-5)=mn+4n^2-5n
so total we ahve
-2m-2n+8-10m+10n+mn+4n^2-5n
group like terms
4n^2+-2m-10m-2n+10n-5n+mn+8
add like temrs
4n^2-12m+3n+mn+8
Answer:
Step-by-step explanation:
Hence,
The radius of the circle is 4 units, coordinates of its centre are (4,-2).
Given:
The postal service charges $10.30 per pound on the package shipped to England.
To find:
The rate in dollars per ounce.
Solution:
We know that,
1 pound = 16 ounce
1 Dollar per pound = 
dollar per ounce.
1 Dollar per pound = 0.0625 dollar per ounce.
We have, the postal service charges $10.30 per pound on the package shipped to England.
Using the above conversion, we get
$10.30 Dollar per pound = 
dollar per ounce
$10.30 Dollar per pound = 
dollar per ounce
Therefore, the required rate is $0.64375 per ounce.
Answer:
7.5 g salt
10g yeast
50 ML oil
450 ML water
Step-by-step explanation:
You would do 1/4 of the amount of (insert ingredient amout) added to the total (insert ingredient amount)
