1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bezimeni [28]
1 year ago
6

Remove the parentheses from 3(x-8)

Mathematics
2 answers:
sattari [20]1 year ago
6 0

the answer to your problem is 3x-24

Gekata [30.6K]1 year ago
3 0
Answer is 3x -24

Step by step

We perform distributive multiplication of the number outside the parentheses by the numbers inside the parentheses
You might be interested in
How to get a custom background on graphing calculator
Monica [59]

Answer:

scroll down to image :)! u can store 10 imgs. or u can change bg color! but thats for ti-84 ce!

Step-by-step explanation:

4 0
3 years ago
Find the missing side of the missing side.<br><br> The length of the missing side is: ?m
WARRIOR [948]
Your answer is 76m.

a^2+b^2=c^2

57^2+b^2=95^2

3249+b^2=9025

b^2=5776

Take sqr on both sides and you get:

b=76m
3 0
3 years ago
What do the medians and ranges of two dot plots tell you about the data
Tatiana [17]
That both (along with the mean) help the data be described the data's spread, which can be the slope if only two points.
5 0
3 years ago
Containers that have different shapes can not have the same volume.<br> True<br> False
Goshia [24]

Answer:

true

Step-by-step explanation:

rjdkejdkdkekewnensjwkw

6 0
3 years ago
Suppose we are interested in analyzing the weights of NFL players. We know that on average, NFL players weigh 247 pounds with a
tigry1 [53]

Answer:

SE= \frac{\sigma}{\sqrt{n}} = \frac{47}{\sqrt{30}}= 8.58

ME= 1.64 *\frac{\sigma}{\sqrt{n}} = 1.64*\frac{47}{\sqrt{30}}= 14.073

\bar X - ME = 237- 14.073 = 222.927

\bar X + ME = 237+ 14.073 = 251.073

n=(\frac{1.640(47)}{5})^2 =237.65 \approx 238

So the answer for this case would be n=238 rounded up to the nearest integer

Null hypothesis:\mu \geq 247  

Alternative hypothesis:\mu  

z=\frac{237-247}{\frac{47}{\sqrt{30}}}=-1.165  

p_v =P(z  

If we compare the p value and the significance level given \alpha=0.1 we see that p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can't conclude that the true mean is lower than 247 at 10% of significance.

Step-by-step explanation:

For this case we have the following data given:

\bar X =237 represent the sample mean

\sigma = 47 represent the population deviation

n =30 represent the sample size selected

\mu_0 = 247 represent the value that we want to test.

The standard error for this case is given by:

SE= \frac{\sigma}{\sqrt{n}} = \frac{47}{\sqrt{30}}= 8.58

For the 90% confidence the value of the significance is given by \alpha=1-0.9 = 0.1 and \alpha/2 = 0.05 so we can find in the normal standard distribution a quantile that accumulates 0.05 of the area on each tail and we got:

z_{\alpha/2}= 1.64

And the margin of error would be:

ME= 1.64 *\frac{\sigma}{\sqrt{n}} = 1.64*\frac{47}{\sqrt{30}}= 14.073

The confidence interval for this case would be given by:

\bar X - ME = 237- 14.073 = 222.927

\bar X + ME = 237+ 14.073 = 251.073

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (a)

And on this case we have that ME =5 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

Replacing into formula (b) we got:

n=(\frac{1.640(47)}{5})^2 =237.65 \approx 238

So the answer for this case would be n=238 rounded up to the nearest integer

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean is lower than 247 pounds, the system of hypothesis would be:  

Null hypothesis:\mu \geq 247  

Alternative hypothesis:\mu  

Since we know the population deviation, is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic  

We can replace in formula (1) the info given like this:  

z=\frac{237-247}{\frac{47}{\sqrt{30}}}=-1.165  

P-value  

Since is a left tailed test the p value would be:  

p_v =P(z  

Conclusion  

If we compare the p value and the significance level given \alpha=0.1 we see that p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can't conclude that the true mean is lower than 247 at 10% of significance.

5 0
3 years ago
Other questions:
  • HURRY PLZ !!!! Based on the family the graph below belongs to, which equation could represent the graph?
    11·2 answers
  • You caught a red snapper that is 8 5/12 inches long. Your friend caught a red snapper that is 8 6/13 inches long. Who caught the
    11·1 answer
  • There are 60 tables in a restaurant, with 25% of them seating 2 people. The tables remaining seat 4 people. How many seats are t
    11·1 answer
  • What is 16/80 simplified?
    10·2 answers
  • Need help on 2,3,4 thx!
    7·1 answer
  • What do you call the terms between 2 terms?
    11·1 answer
  • What is the leading coefficient of the polynomial? 7x + 10x2 + 3x3 − 5 A) −5 B) 10 C) 3 D) 7
    9·1 answer
  • Put these distances in order from least to greatest: 3/16, 1/8, 3/4 mile
    8·1 answer
  •  A map of a highway has a scale of 2 inches=45 miles. The length of the highway on the map is 9 inches. There are 7 rest stops e
    14·1 answer
  • 36 divided (3x2)-4<br><br><br><br> don’t give NO WORG ANSWER
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!