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timofeeve [1]
4 years ago
8

SOMEBODY PLEASE HELP ME

Mathematics
1 answer:
Leto [7]4 years ago
3 0
5/8=1/2a+2
5a/8=<span>1/2+<span>2<span>a 
</span></span></span>5/8a=2a+1/2
5/8a−2a=<span>2a+1/2−<span>2a
</span></span>−11/8a=<span>1/<span>2
</span></span><span><span>(<span>8/−11</span>)</span>*<span>(<span><span>−11/8</span>a</span>)</span></span>=<span><span>(<span>8/−11</span>)</span>*<span>(1/2<span>)
</span></span></span>a=<span><span>−4/</span><span>11

The answer is -4/11 

Hope this helps :)</span></span>
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3.14 The waiting time, in hours, between successive speeders spotted by a radar unit is a continuous random variable with cumula
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Answer:

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(b) The probability of waiting less than 12 minutes between successive speeders using the probability density function is 0.7981.

Step-by-step explanation:

The  cumulative distribution function of the random variable <em>X, </em>the waiting time, in hours, between successive speeders spotted by a radar unit is:

F(x)=\left \{ {{0;\ x

(a)

Compute the probability of waiting less than 12 minutes between successive speeders using the cumulative distribution function as follows:

12\ \text{minutes}=\frac{12}{60}=0.20\ \text{hours}

The probability is:

P(X

                  =(1-e^{-8x})|_{x=0.20}\\\\=1-e^{-8\times 0.20}\\\\=0.7981

Thus, the probability of waiting less than 12 minutes between successive speeders using the cumulative distribution function is 0.7981.

(b)

The probability density function of <em>X</em> is:

f_{X}(x)=\frac{d F (x)}{dx}=\left \{ {{0;\ x

Compute the probability of waiting less than 12 minutes between successive speeders using the probability density function as follows:

P(X

                  =8\times [\frac{-e^{-8x}}{8}]^{0.20}_{0}\\\\=[-e^{-8x}]^{0.20}_{0}\\\\=(-e^{-8\times 0.20})-(-e^{-8\times 0})\\\\=-0.2019+1\\\\=0.7981

Thus, the probability of waiting less than 12 minutes between successive speeders using the probability density function is 0.7981.

3 0
3 years ago
Last month in the village of 125 people we’re issued a parking ticket. This month only 83 people were issued one. What was the p
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Answer:

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Step-by-step explanation:

Given:

Last month in the village of 125 people were issued a parking ticket.

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Now, to find the percent reduction from this month to last month and the number of people who were issued a Parking ticket.

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=\ 33.6\%

Therefore, the percent reduction is 33.6% and the number of people who were issued a parking ticket are 42.

7 0
3 years ago
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