write write a subtraction sentence where the difference is positive. Use a positive and negative integer?

Mathematics

2 answers:

nekit [7.7K]3 years ago

5 0

15.75 -(-3.85) + (-2.54)

34kurt3 years ago

5 0

When you subtract a negative number, it is the same as additon.
Therefore if you subtract a negative number from a positive number, the result will be positive.

9-(-2)=11

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LabTech is a company that manufactures microscopes and other laboratory instruments . On occasion, one of the microscopes is def

Scrat [10]

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

$f(k,n,p)=\binom{n}{k}p^kq^{n-k}$

Where $q = 1-p$

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

$f(1,50,0.0017)=\binom{50}{1}0.0017^10.9983^{49}=0,0782$