Answer:
73
Step-by-step explanation:
250 - 200 + 38 - 15 = 73
False
common difference of this arithmetic sequence is -2
so next 3 terms are : -32, 64, -128
Can you show the problem ?
Answer:
0.0782 (7.82%)
Step-by-step explanation:
The required probability will be found by using the Binomial Distribution which fits the case of n independent events each with a probability of success equal to p with k successes.
The PMF (Probability Mass Function) is

Where 
LabTech states that the probability that a microscope is defective is 0.17%, p=0.0017, q=0.9983. We need to know the probability that k=1 microscope is defective out of a set of n=50 of them. We now apply the formula

Which means that there is a 7.82% of probability to get 1 defective microscope out of the first 50
Answer:
hours is closest to 2 hours.
Step-by-step explanation:
We have been given three numbers and we need to decide which of the three numbers is closest to 2.
In order to decide that, we will convert each of the given numbers into decimals and then we will compare.

Upon comparing 2.750, 2.375 and 2.600 we know that 2.375 is closest to 2. Therefore, out of the given three numbers,
is closest to 2.