Answer:
0.6804
Step-by-step explanation:
Given that Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average.
Since each trial is independent and there are two outcomes, X no of good serves is binomial with n=6 and p =2/3
Required probability
= Prob that atleast four of 6 times good serve
=
=
Formula used:
P(X=r) =
Answer:
-89/56
or simplified that would be
-1 and 33/56
Step-by-step explanation:
Answer:
4y
Step-by-step explanation:
Hey There!
given the equation
y - (-3y)
the two negative signs cancel out and make it into
y + 3y which is equal to 4y
thus meaning the answer to your problem is 4y
10(4x-1) is the answer to your question my friend