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
givi [52]
3 years ago
5

H e l p

Mathematics
1 answer:
OLEGan [10]3 years ago
5 0

Answer;  

1: when shawn woke up

2: the temperature change is 27

Step-by-step explanation:

You might be interested in
Help me answer these2 questions plz
AlladinOne [14]
First one is c and the second im not sure on
6 0
2 years ago
What is the surface area of a fear with a diameter of 2.7 inches? Use 3.14 for π
GrogVix [38]

Answer:

22.8906 sq in

Step-by-step explanation:

SA of a sphere = 4 π r^{2}

r = 2.7 / 2 = 1.35

4 x 3.14 x 1.35^{2} = 22.8906

5 0
3 years ago
A study of pollutants showed that certain industrial emissions should not exceed 2.3 parts per million. You believe a particular
Musya8 [376]

Answer:

t=\frac{3.3-2.3}{\frac{0.4}{\sqrt{9}}}=7.5    

The degrees of freedom are given by:

df=n-1=9-1=8  

And the p value would be:

p_v =P(t_{(8)}>7.5)=0.0000346  

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true mean is significantly higher than 2.3 ppm the safe limit

Step-by-step explanation:

Information provided

\bar X=3.3 represent the sample mean in ppm

s=0.4 represent the sample standard deviation

n=9 sample size  

\mu_o =2.3 represent the value to verify

\alpha=0.05 represent the significance level

t would represent the statistic  

p_v represent the p value

System of hypothesis

We want to verify if the true mean is higher than 2,3 ppm, the system of hypothesis would be:  

Null hypothesis:\mu \leq 2.3  

Alternative hypothesis:\mu > 2.3  

The statistic for this case is given by:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Replacing the info given we got:

t=\frac{3.3-2.3}{\frac{0.4}{\sqrt{9}}}=7.5    

The degrees of freedom are given by:

df=n-1=9-1=8  

And the p value would be:

p_v =P(t_{(8)}>7.5)=0.0000346  

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true mean is significantly higher than 2.3 ppm the safe limit

6 0
3 years ago
Simplify the following expression. 23 + 13 + 63 × 63 ÷ 6 =
posledela

Answer:

Here is the answer

Step-by-step explanation:

6 0
2 years ago
I have so many children but I can’t find them -9(8-6n)
Tatiana [17]
Answer :
-9(8-6n) = 0
-9(2n) = 0
-18n = 0
n = 18
3 0
2 years ago
Other questions:
  • 15.7/6.28 what is the answer how do you do it
    11·1 answer
  • Rx + sx/t = 1<br> solve for x
    13·2 answers
  • Is the sum of 4.2 and square root of 2 rational or irrational
    10·1 answer
  • PLS HELP!!! BRAINLIEST AND 50 POINTS!!!!! CORRECT ANSWERS ONLY PLS<br><br> What is the value of x?
    5·1 answer
  • PLEASE HELP 3x - (2x - 17)-2/3 (12x – 9)
    14·1 answer
  • Create a number story that involves multiplying the factors twenty-three and fifty. Then, give a written explanation of how you
    9·2 answers
  • 14girls to 35boys how does this go into a fraction
    5·2 answers
  • Nick and his family traveled by train to New York City. The clocks show when the train left the station and when it arrived in N
    12·1 answer
  • The work of a student to solve the equation 2(3x − 4) = 8 + 2x + 4 is shown below:
    15·1 answer
  • I need someone to Evaluate 271,000√3.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!