Answer:
The Answer is: The first number is 20 and the second number is -2.
Step-by-step explanation:
Let f = first number and s = second number.
The sum is 18:
f + s = 18
Solve for s:
s = 18 - f
The difference is 22:
f - s = 22
Substitute:
f - (18 - f) = 22
f - 18 + f = 22
2f = 22 + 18
2f = 40
f = 20, the first number.
Solve for s:
s = 18 - f
s = 18 - 20 = -2, the second number.
Proof:
20 + (-2) = 18
20 - 2 = 18
18 = 18
Then:
f - s = 22
20 - (-2) = 22
20 + 2 = 22
22 = 22
Hope this helps! Have an Awesome Day!! :-)
Theoretical probability is what you would expect the result of an experiment would be. For example if you tossed a fair coin 10 times the theoretical result would be 5 heads and 5 tails, because probabilty of 1 toss is 1/2 for tailand 11/2 for a head.
I practice however we might get , say, 6 heads and 4 tails
So experimental probability of e head would be 6/10 and of a tail would be 4/10.
Answer:
hope these answers helps u out
Step-by-step explanation:
PLZZ MARK ME AS BRAINLIEST
Answer:
The variance is 129
Step-by-step explanation:
The variance of a binomial distribution is defined as
where n is the number of trials, and p is the prob of success. So in your case the variance is:
(I am intentionally rounding to nearest integer to make the variance a meaningful value, since the events are discrete and not fractional measurements)
