Answer:
X = 0.5*(p1+p2)*n
a) X = pn
Step-by-step explanation:
Hello!
Since the coin is randomly chosen we can give the probability of choosing one or the other 0.5.
Now, X must be given by the probability of heads for either of the coins, since we do not know which coin have been choosed we must consider both of them, but multiplied by the 0.5 probability to choose one of them.
That is:
X = 0.5*(p1+p2)*n
a) If p1 = p2 = p
X = p*n
which makes sense since is the same as only having one coin
Answer:
I believe Isaac Newton did with a formula.
gravity(F=Gm1m2/ r2)
Hope this helps
Step-by-step explanation:
Answer:
x=7
Step-by-step explanation:
13x-1 and the right angle are vertical angles, so they are equal
13x-1 = 90
Add 1 to each side
13x-1+1 =90+1
13x = 91
Divide by 13 on each side
13x/13 = 91/13
x = 7
Answer: 
Step-by-step explanation:
Given: Fraction of 7th graders got A = 
Fraction of 7th graders got B = 
The fraction of the students got an A or B = Fraction of 7th graders got + Fraction of 7th graders got B
Hence, the required fraction:
Answer: A factor tree is a special diagram where we find the factors of a number and then factors of those numbers until we can’t factor them anymore. In the end, what we get are all the prime factors of the original number.
Factor Tree of 630 is the list of prime numbers when multiplied results in original number 630.
Factor Tree Calculator is an online tool that displays the factors of a given number. This online handy calculator makes the calculations easy and faster for you. Enter the number in the input field. Click on the 'calculate' button and you will get the factors. It Displays the factors in a fraction of seconds.
Step-by-step explanation:
