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sergij07 [2.7K]
3 years ago
7

1. Find the product of 2.1 and 3.4.

Mathematics
2 answers:
ANEK [815]3 years ago
4 0

Answer:

7.14

Step-by-step explanation:

Korolek [52]3 years ago
3 0

Answer: 7.14

Step-by-step explanation:

Product means they answer to a multiplication problem.

To find the product, you must multiply 2.1 and 3.4.

2.1 • 3.4

Set it up like this:

  2.1

x 3.4

You will multiply the numbers as displayed in the attached image:

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kirza4 [7]

Answer:

that seem pretty hard but i think ik it

6 0
3 years ago
each question mark is a missing exponent. find the value of the exponent and match each correct answer to complete the riddle be
alukav5142 [94]

Please find attached photographs for your answer. Do comment whether it is useful or not

7 0
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
What are the coefficients in the problem 7a + 5b =c
ki77a [65]

Answer:

7 and 5

Step-by-step explanation:

they have variables with them

3 0
3 years ago
Nancy needs 4/5 of a foot of ribbon to make a bow and she has 4 feet ribbon how many bows can she make
vlabodo [156]

Answer:

I believe she can make one bow

Step-by-step explanation:

Iso if she has 5 feet of ribbon and only takes four feet of it then that leaves one foot left but if she has a perfect four foot then she can make a ribbon without extra

5 0
3 years ago
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