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aleksklad [387]

3 years ago

5

Madison's skateboard cost 10% more than Tony's skateboard. Madison's skateboard cost $83. B. Write an equation that could be use

d to find the cost of Tony's skateboard.

1 answer:

bagirrra123 [75]3 years ago

7 0

What u can do is turn the 10% into a decimal like .10 and then multiply it by 83 and then you would get 8.3 . I hope this was helpful

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Answer: a. P (x<30) = 0.5276

b. P (30<x<35) = 0.0555

Step-by-step explanation: An <u>exponential</u> <u>distribution</u> is a distribution of time in which events happens at a constant average rate.

The rate is calculated as

$\lambda=\frac{1}{\mu}$

with μ as the mean.

The probability density distribution for this type of distribution is

$f(x)=\lambda e^{-\lambda x}$

And probability is calculated as

$P(X$

For tuning of an engine, the rate is

$\lambda=\frac{1}{40}$

λ = 0.025

a. Probability of less than 30 minutes:

$P(X$

$P(X$

P (X < 30) = 0.5276

<u>Probability of tuning in 30 minutes or less is </u><u>52.76%</u><u>.</u>

<u />

b. Probability of between 30 and 35 can be described as

$P(30$

$P(X$

$P(X$

P (X < 35) = 0.5831

P (X < 30) = 0.5276

Then:

$P(30$

P (30 < X < 35) = 0.0555

<u>Probability of tuning an engine between 30 and 35 minutes is </u><u>5.55%.</u>

<u />

<u />

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