Answer:
= (x+4) (x-7)
Step-by-step explanation:
x²-3x -28
Product = -28
Sum = -3
numbers = -7 and 4
Thus;
x²- 3x -28 ; replacing -3x with -7x and 4x
x²-7x +4x -28
x(x-7) + 4(x-7)
<u>= (x+4) (x-7) </u>
Answer:p=28 and q=4(7)
Step-by-step explanation:
p=28 and q=4(7)
3 1/2 x 1/4= 7/2 x 1/4= 7/8 so he's watered and fertilized 7/8 of an acre today.
Answer:
Expected number of visits to the emergency room that would require a surgery is 336.
Step-by-step explanation:
Let <em>X</em> = number of surgery.
The odds of having a surgery in a randomly selected visit to a emergency room is 4 out of 10.
Then the probability of having a surgery in a randomly selected visit to a emergency room is:
In the past month a large urban hospital had 840 emergency visits.
An emergency room visit may lead to surgery or not is independent of the others.
The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> = 840 and <em>p</em> = 0.40.
The expected value of a binomial random variable is:
Compute the expected number of visits that would require a surgery as follows:
Thus, expected number of visits to the emergency room that would require a surgery is 336.
The answer is 32
If you're curious how I got that answer, I simply moved the decimal point 3 spots to the right. This is because 1000 has 3 zeros.
If you were to use a calculator, it would also say that 0.032*1000 = 32