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Gwar [14]
3 years ago
10

Hi! I really need help with the following questions, PLEASE SHOW YOUR WORK! If anyone is willing to help me! Thank you and pleas

e someone help me.
Solve for X.
1) (2x+1/3)=2x


2)Jeydas soccer team sells T-Shirts to raise money for new equipment. For each T-Shirt sold, the team raises $8. Parents also make a donation of $100 toward equipment. What is the equation that represents the total amount raised,y, if x-T shirts are sold?


3)Mercury is the closest planet to the Sun at a distance of 36 million miles.The closest star to the sun is Próxima Centauri, which is 4.24 light years away. A light year is 5.9*10^12 miles.

Part A) Write the distance in miles form mercury to the sun in scientific notation.

Part B) How many miles from the sun is Proxima Centaurl? Express your answer in Scientific notation.

Part C) About how many times greater is the distance from the sun to proxima centaurl compared to the distance from the sun to mercury? Express your answer in scientific notation.

Mathematics
1 answer:
amid [387]3 years ago
5 0
This is the answer for your first and second question

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2 years ago
According to a Pew Research Center, in May 2011, 35% of all American adults had a smart phone (one which the user can use to rea
Veronika [31]

Answer:

p_v =P(z>1.82)=0.034  

Assuming a standard significance level of \alpha=0.05 the best conclusion for this case would be:

4. There is not enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.034).

Because p_v

If we select a significance level lower than 0.034 then the conclusion would change.

Step-by-step explanation:

Data given

n=300 represent the random sample taken

X=120 represent the people who have a smart phone

\hat p=\frac{120}{300}=0.4 estimated proportion of people who have a smart phone

p_o=0.35 is the value that we want to test

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

System of hypothesis

We need to conduct a hypothesis in order to test the claim that the true proportion of people who have a smart phone is higher than 0.35, the system of hypothesis are.:  

Null hypothesis:p\leq 0.35  

Alternative hypothesis:p > 0.35  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.4 -0.35}{\sqrt{\frac{0.35(1-0.35)}{300}}}=1.82  

Statistical decision  

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

p_v =P(z>1.82)=0.034  

Assuming a standard significance level of \alpha=0.05 the best conclusion for this case would be:

4. There is not enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.034).

Because p_v

If we select a significance level lower than 0.034 then the conclusion would change.

4 0
3 years ago
The APR of Estelle's savings account is 4.5% but interest is compounded only once a year. what is the APY of Israel's savings ac
Tems11 [23]
4.5% is the answer to yo problem ..
8 0
3 years ago
Read 2 more answers
F(x) = 2/5x + 24 what is the value of x when f(x) =25
dybincka [34]

Answer:

exact form: 5/2

decimal form: 2.5

mixed number form: 2    2/1

Step-by-step explanation:

8 0
2 years ago
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