Let's say the numbers are "a" and "b"
now, we know one of them is 7 more than the other, so hmmm let's say "b" is 7 more than "a", so b = a + 7
the difference of their squares is 161, alrite
and surey you know how much that is
now, what's "b"? well, b = a + 7
Using the binomial distribution, it is found that there is a 0.0116 = 1.16% probability that exactly 4 out of the first 14 customers buy a magazine.
<h3>What is the binomial distribution formula?</h3>
The formula is:
The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
In this problem:
- 7% of his customers buy a magazine, hence p = 0.07.
- A sample of 14 customers is taken, hence n = 14.
The probability that exactly 4 out of the first 14 customers buy a magazine is P(X = 4), hence:
0.0116 = 1.16% probability that exactly 4 out of the first 14 customers buy a magazine.
More can be learned about the binomial distribution at brainly.com/question/24863377
The answer should be the very last option. An equation where the highest exponent of the variable (usually x) is a square (2).
Answer:
<em>x = ± ( 5√5 - 3 ) / 2</em>
Step-by-step explanation:
We are given the equation ( 2x + 3 )² = 125;
<em>Solution ; x = ± ( 5√5 - 3 ) / 2</em>
