6(7)^2+4(7)+8=y
6(49)+28+8=y
294+28+8=y
330=y
It is hard to find out question cn u pls take a pic and upload so it will more easier to find out the question
Answer:
3000
Step-by-step explanation:
x = original amount of GHC
--> 1/6x = 500
x= 3000
Answer:
1.43%
Step-by-step explanation:
we have that we can solve it by means of binomial, in this case m = 25. Also the probability of head is 50%. we need to know when it falls 7 times, therefore x = 7
the formula is:
P (x) = mCx * p ^ x * q ^ (m-x)
we know that p is 0.5 therefore q is equal to 0.5, replacing:
P (7) = 25C7 * 0.5 ^ 7 * 0.5 ^ (25-7)
P (7) = 25! / (7! * (25-7)!) * 0.5 ^ 7 * 0.5 ^ (25-7)
P = 0.0143
that is, the probability is 1.43%
