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3 years ago

PLS HELP!!! Help needed immediately!!

Mathematics

1 answer:

Mandarinka [93]3 years ago

3 0

Answer:

Step-by-step explanation:

Given Data:

Starting Balance: $100 Annual Rate: 4% = 4/100 = 0.04

Time: 12 years =

The Simple Terms going to be used here:

I: Amount of money you will make in interest. This shouldn't be confuse with the interest rate, r.

r: It is the interest rate, And expressed as a percentage. we will always need to convert this number into a decimal by dividing it by 100. So, for example 5% becomes 0.05.

t: It is time in terms of years. I-e, a year will become 12 months.

p: It is the principal. That is how much you deposited in the bank or take from it.

Now Using The formula for the Solution:

I = p * r * t

I = 100*0.04*12

I = $48

Hence The amount left with all the sum will be

A total of: $100 + $48 = $148

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vampirchik [111]

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a) 60% probability that a randomly selected cable repair visit will take at least 50 minutes

b) 60% probability that a randomly selected cable repair visit will take at most 55 minutes.

c) The expected length of the repair visit is 52.5 minutes.

d) The standard deviation is 7.22 minutes.

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

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This is $P(X \leq 55)$

$P(X \leq 55) = \frac{55 - 40}{65 - 40} = 0.6$

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The mean of the uniform distribution is:

$M = \frac{a+b}{2}$

$M = \frac{40+65}{2} = 52.5$

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The standard deviation of the uniform distribution is

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