All categories

2 years ago

Use the function p(x)=4x-3 what is p(3)

Mathematics

2 answers:

alexandr1967 [171]2 years ago

7 0

Answer:

Step-by-step explanation:

Use the given functions to set up and simplify p ( 3 ) .

-barbara

Anestetic [448]2 years ago

6 0

Answer:

Step-by-step explanation:

p(x)= 4X-3

P(3)= 4×3-3=9

You might be interested in

The price of products may increase due to inflation and decrease due to depreciation. Derek is studying the change in the price

BaLLatris [955]

For product A, the product is increasing, for the bigger the number you plug into x (due to the fact that the numbers become bigger because of the time: year 1, year 2, etc)
Product A is 82% change rate, while
product B is 983.45/4 = 245.8625, 1756.16/3 = <span>585.3867</span>
Product B is 245.8625/585.3867
product B is 42% change rate

Product A change rate is higher than Product B by 40%

hope this helps

3 0

3 years ago

Each time Kristine gets paid, she spends $20 and saves the rest. If the amount Kristine earns is represented by x and the amount

bearhunter [10]

Answer:

$y=x-20$

Step-by-step explanation:

Each time Kristine gets paid, she spends $20 and saves the rest.

Let the amount Kristine earns is represented by x.

Let the amount she saves is represented by y.

The equation forms:

$y=x-20$

So, the graph demonstrating this will be the answer.

3 0

3 years ago

Read 2 more answers

What is the probability of drawing an ace or a jack out of a standard card deck?

Tom [10]

There are 4 of each card

4 aces, 4 jacks

probablity=desired outcomes/total possible oucomes

4+4=8

8 desired outcomes

52 total cards
probablity=8/52=2/13

the probablity is 2/13

7 0

3 years ago

Read 2 more answers

Trent saved up $500 for summer vacation. If he spends $25 a week for eight weeks, how much money does he have left? Explain? (Ca

Alex17521 [72]

Answer:300

Step-by-step explanation:

25*8 =200

500-200=300

6 0

3 years ago

Read 2 more answers

The mean of a population is 74 and the standard deviation is 16. The shape of the population is unknown. Determine the probabili

bulgar [2K]

Answer:

$P(X > 75)= 0.35402$

$P(72 < X < 75 ) = 0.2529$

$P( X < 74.7) = 0.74041$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 74$

The population standard deviation is $\sigma = 16$

Considering question a

The sample size is n = 36

Generally the standard error of mean is mathematically represented as

$\sigma_{x} = \frac{\sigma }{\sqrt{n} }$

=> $\sigma_{x} = \frac{16}{\sqrt{36} }$

=> $\sigma_{x} = 2.67$

Generally the probability that a random sample of size 36 yielding a sample mean of 75 or more is mathematically represented as

$P(X > 75) = P( \frac{X - \mu }{ \sigma_{x}} > \frac{75 - 74}{ 2.67 } )$

$\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )$

$P(X > 75) = P(Z > 0.3745 )$

From the z table the area under the normal curve representing 0.3745 to the right is

$P(Z > 0.3745 ) = 0.35402$

=> $P(X > 75)= 0.35402$

Considering question b

The sample size is n = 104

Generally the standard error of mean is mathematically represented as

$\sigma_{x} = \frac{\sigma }{\sqrt{n} }$

=> $\sigma_{x} = \frac{16}{\sqrt{104} }$

=> $\sigma_{x} = 1.5689$

Generally the probability that a random sample of size 104 yielding a sample mean between 72 and 75 is mathematically represented as

$P(72 < X < 75 ) = P(\frac{72 - 74 }{1.5689} < \frac{X - \mu }{\sigma_{x}} < \frac{75 - 74 }{1.5689} )$

=> $P(72 < X < 75 ) = P(-1.275 < Z < 0.375 )$

=> $P(72 < X < 75 ) = P(Z < 0.375 ) - P(Z < -1.275)$

From the z table the area under the normal curve representing -1.275 to to the left is

$P(Z < -1.275) =0.10115$

=> $P(72 < X < 75 ) = 0.35402 - 0.10115$

=> $P(72 < X < 75 ) = 0.2529$

Considering question c

The sample size is n = 217

Generally the standard error of mean is mathematically represented as

$\sigma_{x} = \frac{\sigma }{\sqrt{n} }$

=> $\sigma_{x} = \frac{16}{\sqrt{217} }$

=> $\sigma_{x} = 1.086$

Generally the probability that a random sample of size 217 yielding a sample mean of less than 74.7 is mathematically represented as

$P( X < 74.7) = P(\frac{X - \mu }{\sigma_x} < \frac{ 74.7 - 74 }{ 1.086 })$

=> $P( X < 74.7) = P(Z < 0.6446 )$

From the z table the area under the normal curve representing 0.6446 to to the left is

$P(Z < 0.6446 ) = 0.74041$

=> $P( X < 74.7) = 0.74041$

8 0

3 years ago