We are given with the inequality |2x + 1| ≤ 5 and asked to solve the equation. In this case, we take first the positive side, that is 2x + 1 ≤ 5. this is equal to 2x ≤ 4 or x ≤ 2. For the negative side, the equality is -5 ≤ 2x + 1. This is equal to -6 ≤ 2x or -3 ≤ x. Hence the solution is -3 ≤ x ≤ 2. The answer is B. closed dots on -3 and 2 with shading in between. The equal in <span>≤ means closed dots.</span>
Answer:
The expected number of keys she will try before she opens the door is 4.5.
Step-by-step explanation:
A woman has eight keys on a key ring, one of which fits the door she wants to unlock.
Each of them is equally as likely to be the one to work, which means that this situation is represented by an uniform distribution with lower bound and upper bound .
Find the expected number of keys she will try before she opens the door.
The expected value of the uniform distribution is given by:
Considering , as is the case in this exercise:
The expected number of keys she will try before she opens the door is 4.5.
Answer: 13 bottles.
Step-by-step explanation: 364 is divided by 28 because the pharmacist divides 364 pills and each bottle contains 28 pills so 364 divided by 28 is 13.
Answer:
Step-by-step explanation:
4 feet