What is the product? −4 × ( −2 2/5)

Mathematics

1 answer:

elixir [45]2 years ago

5 0

Answer:

9.6

Step-by-step explanation:

Hope this help : ) . Bye.

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Mr. Gardener invested $500,000. His annual interest was $40,000. What was the annual interest rate?

Mademuasel [1]

Answer: The annual interest rate r= 8%

Step-by-step explanation:

Given: The invested amount = $500,000.

The annual interest = $40,000

The annual interest rate is given by :-

$r=\frac{\text{interest}}{\text{invested amount}}\times100\\\\\Rightarrow\ r=\frac{40,000}{500,000}\times100\\\Rightarrow\ r=\frac{4}{50}\times100\\\\\Rightarrow\ r=8\%$

Hence, the annual interest rate r= 8%

7 0

2 years ago

Read 2 more answers

A Geiger counter counts the number of alpha particles from radioactive material. Over a long period of time, an average of 14 pa

UkoKoshka [18]

Answer:

0.2081 = 20.81% probability that at least one particle arrives in a particular one second period.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval.

Over a long period of time, an average of 14 particles per minute occurs. Assume the arrival of particles at the counter follows a Poisson distribution. Find the probability that at least one particle arrives in a particular one second period.

Each minute has 60 seconds, so $\mu = \frac{14}{60} = 0.2333$